diff --git a/packages/libs/designer-decisions/src/decisions/createStaticDecisionMap.ts b/packages/libs/designer-decisions/src/decisions/createStaticDecisionMap.ts
index 07f6004..eb696bf 100644
--- a/packages/libs/designer-decisions/src/decisions/createStaticDecisionMap.ts
+++ b/packages/libs/designer-decisions/src/decisions/createStaticDecisionMap.ts
@@ -1,5 +1,11 @@
 import type { StaticDecisionMap, StaticInputMap } from '../inputs';
-import type { Decision, DecisionContext, DecisionInputBase, DecisionRef } from '../types';
+import type {
+    BaseValue,
+    Decision,
+    DecisionContext,
+    DecisionInputBase,
+    DecisionRef,
+} from '../types';
 
 import {
     createDecisionContext,
@@ -18,7 +24,7 @@ export const createStaticDecisionMap = (inputStore: StaticInputMap): StaticDecis
         }
     };
 
-    const resolver = <V = unknown>(
+    const resolver = <V extends BaseValue<unknown>>(
         ref: DecisionRef,
     ): [DecisionContext, Decision<V> | undefined] => {
         const inputs = inputStore.records(r => '$name' in ref && r.name === ref.$name); // WIP ref matching
diff --git a/packages/libs/designer-decisions/src/decisions/createStaticStoreDecision.ts b/packages/libs/designer-decisions/src/decisions/createStaticStoreDecision.ts
index e064361..b8d9e5b 100644
--- a/packages/libs/designer-decisions/src/decisions/createStaticStoreDecision.ts
+++ b/packages/libs/designer-decisions/src/decisions/createStaticStoreDecision.ts
@@ -1,4 +1,5 @@
 import type {
+    BaseValue,
     Decision,
     DecisionContext,
     DecisionInputBase,
@@ -9,20 +10,20 @@ import { createDecisionValueContext } from '../values';
 
 import { getDecisionModelFactory } from '.';
 
-export const createStaticStoreDecision = <V = unknown>(
+export const createStaticStoreDecision = <T = unknown>(
     decisionContext: DecisionContext,
     inputs: DecisionInputBase[],
-): Decision<V> => {
-    const produce = (context?: LookupContexts | ParentValueContext): V => {
+): Decision<BaseValue<T>> => {
+    const produce = (context?: LookupContexts | ParentValueContext): BaseValue<T> => {
         const input = inputs[0]; // WIP match context
-        const modelFactory = getDecisionModelFactory<V>(input.model);
+        const modelFactory = getDecisionModelFactory<T>(input.model);
         const model = modelFactory();
 
         const valueContext = createDecisionValueContext(decisionContext, context, input);
-        return model.produce(valueContext, input.params);
+        return model.produce(valueContext, input.params) as BaseValue<T>;
     };
 
-    const api: Decision<V> = {
+    const api: Decision<BaseValue<T>> = {
         uuid: () => inputs[0].uuid,
         type: () => inputs[0].model.split('/')[0],
         name: () => inputs[0].name,
diff --git a/packages/libs/designer-decisions/src/primitives/color/oklab-chroma-scale/createOklabChromaScale.ts b/packages/libs/designer-decisions/src/primitives/color/oklab-chroma-scale/createOklabChromaScale.ts
index 704f3fb..e1605d5 100644
--- a/packages/libs/designer-decisions/src/primitives/color/oklab-chroma-scale/createOklabChromaScale.ts
+++ b/packages/libs/designer-decisions/src/primitives/color/oklab-chroma-scale/createOklabChromaScale.ts
@@ -1,4 +1,5 @@
 import type { DecisionValueContext, OklabChromaScale, OklabChromaValue } from '../../../types';
+import { createItemSet } from '../../set';
 
 export const createOklabChromaScale = (
     context: DecisionValueContext,
@@ -6,7 +7,9 @@ export const createOklabChromaScale = (
 ): OklabChromaScale => {
     context.consume(input);
 
+    const items = createItemSet(input);
+
     return {
-        get: () => input,
+        get: () => items,
     };
 };
diff --git a/packages/libs/designer-decisions/src/primitives/color/oklab-hue-set/createOklabHueSet.ts b/packages/libs/designer-decisions/src/primitives/color/oklab-hue-set/createOklabHueSet.ts
index d55d6fe..08fe6b1 100644
--- a/packages/libs/designer-decisions/src/primitives/color/oklab-hue-set/createOklabHueSet.ts
+++ b/packages/libs/designer-decisions/src/primitives/color/oklab-hue-set/createOklabHueSet.ts
@@ -1,4 +1,5 @@
 import type { DecisionValueContext, OklabHueSet, OklabHueValue } from '../../../types';
+import { createItemSet } from '../../set';
 
 export const createOklabHueSet = (
     context: DecisionValueContext,
@@ -6,7 +7,9 @@ export const createOklabHueSet = (
 ): OklabHueSet => {
     context.consume(input);
 
+    const items = createItemSet(input);
+
     return {
-        get: () => input,
+        get: () => items,
     };
 };
diff --git a/packages/libs/designer-decisions/src/primitives/color/oklab-lightness-scale/createOklabLightnessScale.ts b/packages/libs/designer-decisions/src/primitives/color/oklab-lightness-scale/createOklabLightnessScale.ts
index 9ef5023..6d86e07 100644
--- a/packages/libs/designer-decisions/src/primitives/color/oklab-lightness-scale/createOklabLightnessScale.ts
+++ b/packages/libs/designer-decisions/src/primitives/color/oklab-lightness-scale/createOklabLightnessScale.ts
@@ -3,6 +3,7 @@ import type {
     OklabLightnessScale,
     OklabLightnessValue,
 } from '../../../types';
+import { createItemSet } from '../../set';
 
 export const createOklabLightnessScale = (
     context: DecisionValueContext,
@@ -10,7 +11,9 @@ export const createOklabLightnessScale = (
 ): OklabLightnessScale => {
     context.consume(input);
 
+    const items = createItemSet(input);
+
     return {
-        get: () => input,
+        get: () => items,
     };
 };
diff --git a/packages/libs/designer-decisions/src/primitives/color/set/createColorSet.ts b/packages/libs/designer-decisions/src/primitives/color/set/createColorSet.ts
index 062bb7a..9440c2d 100644
--- a/packages/libs/designer-decisions/src/primitives/color/set/createColorSet.ts
+++ b/packages/libs/designer-decisions/src/primitives/color/set/createColorSet.ts
@@ -1,9 +1,12 @@
 import type { ColorSet, ColorValue, DecisionValueContext } from '../../../types';
+import { createItemSet } from '../../set';
 
 export const createColorSet = (context: DecisionValueContext, input: ColorValue[]): ColorSet => {
     context.consume(input);
 
+    const items = createItemSet(input);
+
     return {
-        get: () => input,
+        get: () => items,
     };
 };
diff --git a/packages/libs/designer-decisions/src/primitives/color/srgb-hue-set/createSRGBHueSet.ts b/packages/libs/designer-decisions/src/primitives/color/srgb-hue-set/createSRGBHueSet.ts
index 3830699..b20b44b 100644
--- a/packages/libs/designer-decisions/src/primitives/color/srgb-hue-set/createSRGBHueSet.ts
+++ b/packages/libs/designer-decisions/src/primitives/color/srgb-hue-set/createSRGBHueSet.ts
@@ -1,4 +1,5 @@
 import type { DecisionValueContext, SRGBHueSet, SRGBHueValue } from '../../../types';
+import { createItemSet } from '../../set';
 
 export const createSRGBHueSet = (
     context: DecisionValueContext,
@@ -6,7 +7,9 @@ export const createSRGBHueSet = (
 ): SRGBHueSet => {
     context.consume(input);
 
+    const items = createItemSet(input);
+
     return {
-        get: () => input,
+        get: () => items,
     };
 };
diff --git a/packages/libs/designer-decisions/src/primitives/color/srgb-lightness-scale/createSRGBLightnessScale.ts b/packages/libs/designer-decisions/src/primitives/color/srgb-lightness-scale/createSRGBLightnessScale.ts
index d95e283..e9df599 100644
--- a/packages/libs/designer-decisions/src/primitives/color/srgb-lightness-scale/createSRGBLightnessScale.ts
+++ b/packages/libs/designer-decisions/src/primitives/color/srgb-lightness-scale/createSRGBLightnessScale.ts
@@ -1,4 +1,5 @@
 import type { DecisionValueContext, SRGBLightnessScale, SRGBLightnessValue } from '../../../types';
+import { createItemSet } from '../../set';
 
 export const createSRGBLightnessScale = (
     context: DecisionValueContext,
@@ -6,7 +7,9 @@ export const createSRGBLightnessScale = (
 ): SRGBLightnessScale => {
     context.consume(input);
 
+    const items = createItemSet(input);
+
     return {
-        get: () => input,
+        get: () => items,
     };
 };
diff --git a/packages/libs/designer-decisions/src/primitives/color/srgb-saturation-scale/createSRGBSaturationScale.ts b/packages/libs/designer-decisions/src/primitives/color/srgb-saturation-scale/createSRGBSaturationScale.ts
index 252dfe4..b2e04a7 100644
--- a/packages/libs/designer-decisions/src/primitives/color/srgb-saturation-scale/createSRGBSaturationScale.ts
+++ b/packages/libs/designer-decisions/src/primitives/color/srgb-saturation-scale/createSRGBSaturationScale.ts
@@ -3,6 +3,7 @@ import type {
     SRGBSaturationScale,
     SRGBSaturationValue,
 } from '../../../types';
+import { createItemSet } from '../../set';
 
 export const createSRGBSaturationScale = (
     context: DecisionValueContext,
@@ -10,7 +11,9 @@ export const createSRGBSaturationScale = (
 ): SRGBSaturationScale => {
     context.consume(input);
 
+    const items = createItemSet(input);
+
     return {
-        get: () => input,
+        get: () => items,
     };
 };
diff --git a/packages/libs/designer-decisions/src/primitives/color/value/resolveColorValueRef.ts b/packages/libs/designer-decisions/src/primitives/color/value/resolveColorValueRef.ts
index 12bdaae..386f7bf 100644
--- a/packages/libs/designer-decisions/src/primitives/color/value/resolveColorValueRef.ts
+++ b/packages/libs/designer-decisions/src/primitives/color/value/resolveColorValueRef.ts
@@ -21,7 +21,19 @@ export const resolveColorValueRef = (context: DecisionValueContext, ref: Decisio
         return v.get();
     } else if (isColorSetDecision(decision)) {
         const set = decision.produce(context);
-        const v = set.get()[ref.index || 0];
+        const v = set.get().item(ref.index || 0);
+        if (!v) {
+            // WIP createRefIndexError
+            const error = createRefMatchError(
+                context,
+                VALUE_NAME,
+                ref,
+                decision,
+                REF_CHECKED_TYPES,
+            );
+            context.addError(error);
+            return FALLBACK_VALUE;
+        }
         return v.get();
     } else {
         const error = createRefMatchError(context, VALUE_NAME, ref, decision, REF_CHECKED_TYPES);
diff --git a/packages/libs/designer-decisions/src/primitives/set/createItemSet.ts b/packages/libs/designer-decisions/src/primitives/set/createItemSet.ts
new file mode 100644
index 0000000..b3efd1d
--- /dev/null
+++ b/packages/libs/designer-decisions/src/primitives/set/createItemSet.ts
@@ -0,0 +1,6 @@
+import type { SetItems } from '../../types';
+
+export const createItemSet = <T>(items: T[]): SetItems<T> => ({
+    items: () => items,
+    item: index => items[index],
+});
diff --git a/packages/libs/designer-decisions/src/primitives/set/index.ts b/packages/libs/designer-decisions/src/primitives/set/index.ts
new file mode 100644
index 0000000..ea11286
--- /dev/null
+++ b/packages/libs/designer-decisions/src/primitives/set/index.ts
@@ -0,0 +1,2 @@
+// @index(['./*.{ts,tsx}', './!(private|parts|functions)*/index.{ts,tsx}'], f => `export * from '${f.path.replace(/\/index$/, '')}';`)
+export * from './createItemSet';
diff --git a/packages/libs/designer-decisions/src/primitives/space/scale/createSpaceScale.ts b/packages/libs/designer-decisions/src/primitives/space/scale/createSpaceScale.ts
index 3b3811b..d02831d 100644
--- a/packages/libs/designer-decisions/src/primitives/space/scale/createSpaceScale.ts
+++ b/packages/libs/designer-decisions/src/primitives/space/scale/createSpaceScale.ts
@@ -1,4 +1,5 @@
 import type { DecisionValueContext, SpaceScale, SpaceValue } from '../../../types';
+import { createItemSet } from '../../set';
 
 export const createSpaceScale = (
     context: DecisionValueContext,
@@ -6,7 +7,9 @@ export const createSpaceScale = (
 ): SpaceScale => {
     context.consume(input);
 
+    const items = createItemSet(input);
+
     return {
-        get: () => input,
+        get: () => items,
     };
 };
diff --git a/packages/libs/designer-decisions/src/primitives/space/value/resolveSpaceValueRef.ts b/packages/libs/designer-decisions/src/primitives/space/value/resolveSpaceValueRef.ts
index 1ddc53d..bbc8f18 100644
--- a/packages/libs/designer-decisions/src/primitives/space/value/resolveSpaceValueRef.ts
+++ b/packages/libs/designer-decisions/src/primitives/space/value/resolveSpaceValueRef.ts
@@ -22,7 +22,19 @@ export const resolveSpaceValueRef = (
         return v.getValueWithUnits();
     } else if (isSpaceScaleDecision(decision)) {
         const scale = decision.produce(context);
-        const v = scale.get()[ref.index || 0];
+        const v = scale.get().item(ref.index || 0);
+        if (!v) {
+            // WIP createRefIndexError
+            const error = createRefMatchError(
+                context,
+                VALUE_NAME,
+                ref,
+                decision,
+                REF_CHECKED_TYPES,
+            );
+            context.addError(error);
+            return FALLBACK_VALUE;
+        }
         return v.getValueWithUnits();
     } else {
         const error = createRefMatchError(context, VALUE_NAME, ref, decision, REF_CHECKED_TYPES);
diff --git a/packages/libs/designer-decisions/src/types/decision-values/base.ts b/packages/libs/designer-decisions/src/types/decision-values/base.ts
index d2bd5a0..5bb5f3d 100644
--- a/packages/libs/designer-decisions/src/types/decision-values/base.ts
+++ b/packages/libs/designer-decisions/src/types/decision-values/base.ts
@@ -1,4 +1,5 @@
 import type { DecisionId, DecisionInputBase, DecisionName } from '../decision-inputs';
+import type { BaseValue } from '../primitive-values';
 
 export type Value = unknown;
 export type Params = object;
@@ -22,7 +23,7 @@ export type DecisionContext = {
 
 export type DecisionLookup = {
     ref: DecisionRef;
-    decision: Decision<unknown>;
+    decision: DecisionUnknown;
 };
 
 export type DecisionValueError = {
@@ -59,7 +60,7 @@ export type LookupContexts = {
     any?: string[];
 };
 
-export type Decision<V extends Value> = {
+export type Decision<V extends BaseValue<unknown>> = {
     type: () => string;
     uuid: () => string | undefined;
     name: () => string;
@@ -74,8 +75,8 @@ export type Decision<V extends Value> = {
 
 export type DecisionFactory = <V = unknown>(
     input: unknown,
-    resolver: <V>(ref: DecisionRef) => Decision<V>,
-) => Decision<V>;
+    resolver: <V extends BaseValue<unknown>>(ref: DecisionRef) => Decision<V>,
+) => Decision<BaseValue<V>>;
 
 export type DecisionNameRef = {
     $name: DecisionName;
@@ -89,17 +90,17 @@ export type DecisionUuidRef = {
 
 export type DecisionRef = DecisionNameRef | DecisionUuidRef;
 
-export type DecisionRefResolver = <V = unknown>(
+export type DecisionRefResolver = <V extends BaseValue<unknown> = BaseValue<unknown>>(
     ref: DecisionRef,
 ) => [DecisionContext, Decision<V> | undefined];
 
-export type DecisionModel<V = unknown, P = object> = {
+export type DecisionModel<V = BaseValue<unknown>, P = object> = {
     produce: (context: DecisionValueContext, params: P) => V;
 };
 
 export type DecisionModelFactory<
-    V = unknown,
+    V = BaseValue<unknown>,
     I extends DecisionInputBase = DecisionInputBase,
 > = () => DecisionModel<V, I['params']>;
 
-export type DecisionUnknown = Decision<unknown>;
+export type DecisionUnknown = Decision<BaseValue<unknown>>;
diff --git a/packages/libs/designer-decisions/src/types/primitive-values/base.ts b/packages/libs/designer-decisions/src/types/primitive-values/base.ts
index ee88575..5746c86 100644
--- a/packages/libs/designer-decisions/src/types/primitive-values/base.ts
+++ b/packages/libs/designer-decisions/src/types/primitive-values/base.ts
@@ -2,6 +2,9 @@ export type BaseValue<T> = {
     get(): T;
 };
 
-export type BaseSet<T> = {
-    get(): T[];
+export type SetItems<T> = {
+    items(): T[];
+    item(index: number): T | undefined;
 };
+
+export type BaseSet<T> = BaseValue<SetItems<T>>;
diff --git a/packages/libs/designer-decisions/src/values/errors/createRefMatchError.ts b/packages/libs/designer-decisions/src/values/errors/createRefMatchError.ts
index 09f3e55..b0e1bc4 100644
--- a/packages/libs/designer-decisions/src/values/errors/createRefMatchError.ts
+++ b/packages/libs/designer-decisions/src/values/errors/createRefMatchError.ts
@@ -1,10 +1,15 @@
-import type { Decision, DecisionRef, DecisionValueContext, DecisionValueError } from '../../types';
+import type {
+    DecisionRef,
+    DecisionUnknown,
+    DecisionValueContext,
+    DecisionValueError,
+} from '../../types';
 
 export const createRefMatchError = (
     context: DecisionValueContext,
     valueName: string,
     ref: DecisionRef,
-    decision: Decision<unknown>,
+    decision: DecisionUnknown,
     accepted: string[],
 ): DecisionValueError => {
     const refStr = JSON.stringify(ref);
diff --git a/packages/libs/designer-decisions/src/values/functions/createValueContext.ts b/packages/libs/designer-decisions/src/values/functions/createValueContext.ts
index 39b45be..4c9aae4 100644
--- a/packages/libs/designer-decisions/src/values/functions/createValueContext.ts
+++ b/packages/libs/designer-decisions/src/values/functions/createValueContext.ts
@@ -1,5 +1,6 @@
 import { isLookupContext } from '../../context';
 import type {
+    BaseValue,
     Decision,
     DecisionContext,
     DecisionInputBase,
@@ -33,7 +34,9 @@ export const createValueContext = (
     const lookups: DecisionLookup[] = [];
     const errors: DecisionValueError[] = [];
 
-    const resolve = <V>(ref: DecisionRef): [DecisionContext, Decision<V> | undefined] => {
+    const resolve = <V extends BaseValue<unknown> = BaseValue<unknown>>(
+        ref: DecisionRef,
+    ): [DecisionContext, Decision<V> | undefined] => {
         const [decisionContext, decision] = resolver<V>(ref);
         lookups.push({
             ref,
diff --git a/packages/libs/designer-functions/src/cli/helpers/getDecisionStatus.ts b/packages/libs/designer-functions/src/cli/helpers/getDecisionStatus.ts
index 26e2ed0..7a64d94 100644
--- a/packages/libs/designer-functions/src/cli/helpers/getDecisionStatus.ts
+++ b/packages/libs/designer-functions/src/cli/helpers/getDecisionStatus.ts
@@ -1,6 +1,6 @@
 import {
-    type Decision,
     type DecisionInputBase,
+    type DecisionUnknown,
     createLookupContext,
 } from '@noodlestan/designer-decisions';
 
@@ -8,7 +8,7 @@ import type { StaticDecisionStore } from '../../store';
 
 import type { DecisionStatus } from './types';
 
-const extractValue = (decision?: Decision<unknown>) => {
+const extractValue = (decision?: DecisionUnknown) => {
     const value = decision?.produce();
     if (
         typeof value === 'object' &&
diff --git a/packages/libs/designer-functions/src/store/createStaticDecisionStore.ts b/packages/libs/designer-functions/src/store/createStaticDecisionStore.ts
index 854b2c4..3c97b84 100644
--- a/packages/libs/designer-functions/src/store/createStaticDecisionStore.ts
+++ b/packages/libs/designer-functions/src/store/createStaticDecisionStore.ts
@@ -1,4 +1,5 @@
 import type {
+    BaseValue,
     Decision,
     DecisionContext,
     DecisionInputBase,
@@ -26,7 +27,7 @@ export const createStaticDecisionStore = (
 ): StaticDecisionStore => {
     const decisionMap = createStaticDecisionMap(inputStore);
 
-    const decision = <V = unknown>(
+    const decision = <V extends BaseValue<unknown> = BaseValue<unknown>>(
         ref: DecisionRef,
     ): [DecisionContext, Decision<V> | undefined] => {
         return decisionMap.resolve(ref);
diff --git a/packages/libs/designer-functions/src/store/types.ts b/packages/libs/designer-functions/src/store/types.ts
index 82ad4b4..8ed6c25 100644
--- a/packages/libs/designer-functions/src/store/types.ts
+++ b/packages/libs/designer-functions/src/store/types.ts
@@ -1,4 +1,5 @@
 import type {
+    BaseValue,
     Decision,
     DecisionContext,
     DecisionRef,
@@ -18,7 +19,7 @@ export type StaticDecisionStore = {
     storeErrors: () => StaticDecisionStoreError[];
     validationErrors: StaticInputMap['validationErrors'];
     records: StaticInputMap['records'];
-    decision: <V = unknown>(
+    decision: <V extends BaseValue<unknown> = BaseValue<unknown>>(
         ref: DecisionRef,
         contexts?: LookupContexts,
     ) => [DecisionContext, Decision<V> | undefined];
diff --git a/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSRGBHueSetDecision.astro b/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSRGBHueSetDecision.astro
index 5b5c4a0..5eed802 100644
--- a/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSRGBHueSetDecision.astro
+++ b/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSRGBHueSetDecision.astro
@@ -13,7 +13,7 @@ const { store, d, size, ...rest } = Astro.props;
 const [, decision] = store.decision({ $name: d });
 const hueSet = decision && isColorSRGBHueSetDecision(decision) ? decision.produce() : undefined;
 
-const items = hueSet?.get();
+const items = hueSet?.get().items();
 
 const s = size || 's';
 ---
diff --git a/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSRGBLightnessScaleDecision.astro b/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSRGBLightnessScaleDecision.astro
index d015ed7..21a3fde 100644
--- a/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSRGBLightnessScaleDecision.astro
+++ b/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSRGBLightnessScaleDecision.astro
@@ -14,7 +14,7 @@ const [, decision] = store.decision({ $name: d });
 const lightnessScale =
     decision && isColorSRGBLightnessScaleDecision(decision) ? decision.produce() : undefined;
 
-const items = lightnessScale?.get();
+const items = lightnessScale?.get().items();
 
 const s = size || 's';
 ---
diff --git a/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSRGBSaturationScaleDecision.astro b/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSRGBSaturationScaleDecision.astro
index ab4d331..d0fcfc9 100644
--- a/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSRGBSaturationScaleDecision.astro
+++ b/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSRGBSaturationScaleDecision.astro
@@ -14,7 +14,7 @@ const [, decision] = store.decision({ $name: d });
 const saturationScale =
     decision && isColorSRGBSaturationScaleDecision(decision) ? decision.produce() : undefined;
 
-const items = saturationScale?.get();
+const items = saturationScale?.get().items();
 
 const s = size || 's';
 ---
diff --git a/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSetDecision.astro b/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSetDecision.astro
index 6d04b58..ec00e24 100644
--- a/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSetDecision.astro
+++ b/packages/libs/designer-shows/src/astro/decisions/color/ShowColorSetDecision.astro
@@ -14,7 +14,7 @@ const { store, d, size, ...rest } = Astro.props;
 const [, decision] = store.decision({ $name: d });
 const set = decision && isColorSetDecision(decision) ? decision.produce() : undefined;
 
-const colors = set?.get();
+const colors = set?.get().items();
 const s = size || 's';
 ---
 
diff --git a/packages/libs/designer-shows/src/astro/decisions/space/ShowSpaceScaleDecision.astro b/packages/libs/designer-shows/src/astro/decisions/space/ShowSpaceScaleDecision.astro
index 2b5f7fb..de80009 100644
--- a/packages/libs/designer-shows/src/astro/decisions/space/ShowSpaceScaleDecision.astro
+++ b/packages/libs/designer-shows/src/astro/decisions/space/ShowSpaceScaleDecision.astro
@@ -13,7 +13,7 @@ const { store, d, size, ...rest } = Astro.props;
 const [, decision] = store.decision({ $name: d });
 const spaceScale = decision && isSpaceScaleDecision(decision) ? decision.produce() : undefined;
 
-const items = spaceScale?.get();
+const items = spaceScale?.get().items();
 
 const s = size || 's';
 ---
diff --git a/packages/libs/designer-shows/src/astro/meta/getDecisionComponent.ts b/packages/libs/designer-shows/src/astro/meta/getDecisionComponent.ts
index 0fbbd89..a272a08 100644
--- a/packages/libs/designer-shows/src/astro/meta/getDecisionComponent.ts
+++ b/packages/libs/designer-shows/src/astro/meta/getDecisionComponent.ts
@@ -1,4 +1,4 @@
-import { type Decision } from '@noodlestan/designer-decisions';
+import { type DecisionUnknown } from '@noodlestan/designer-decisions';
 
 import {
     ShowColorSRGBHueSetDecision,
@@ -15,7 +15,7 @@ import {
 import type { DecisionTypeComponent } from '../types';
 
 export const getDecisionComponent = (
-    decision: Decision<unknown>,
+    decision: DecisionUnknown,
 ): DecisionTypeComponent | undefined => {
     // WIP we would rather have this in a constants.ts file but it looks like
     // component function references are not available in the unit scope