Ensure toGamut always returns a color object

Calling toGamut with a color that is already in gamut
for the specified color space would return the original
color parameter which may or may not be a color object.

For example calling toGamut("red", "oklch") would return "red"
instead of a color object.

This change ensures that a color object will always be returned.

src/toGamut.js

@@ -7,6 +7,7 @@ import to from "./to.js";
 import get from "./get.js";
 import set from "./set.js";
 import clone from "./clone.js";
+import getColor from "./getColor.js";
 
 /**
  * Force coordinates to be in gamut of a certain color space.
@@ -27,7 +28,7 @@ export default function toGamut (color, {method = defaults.gamut_mapping, space
 	space = ColorSpace.get(space);
 
 	if (inGamut(color, space, {epsilon: 0})) {
-		return color;
+		return getColor(color);
 	}
 
 	// 3 spaces: