diff --git a/src/Material-Design-Tests-Colors.package/MDLColorTests.class/instance/testIsAccentuated.st b/src/Material-Design-Tests-Colors.package/MDLColorTests.class/instance/testIsAccentuated.st
new file mode 100644
index 0000000..5cfeb88
--- /dev/null
+++ b/src/Material-Design-Tests-Colors.package/MDLColorTests.class/instance/testIsAccentuated.st
@@ -0,0 +1,4 @@
+tests
+testIsAccentuated
+	self deny: (MDLColor tint: #orange code: '500') isAccentuated.
+	self assert: (MDLColor tint: #orange code: 'A400' ) isAccentuated
\ No newline at end of file
diff --git a/src/Material-Design-Tests-Colors.package/MDLColorTests.class/instance/testTint.st b/src/Material-Design-Tests-Colors.package/MDLColorTests.class/instance/testTint.st
new file mode 100644
index 0000000..f675b50
--- /dev/null
+++ b/src/Material-Design-Tests-Colors.package/MDLColorTests.class/instance/testTint.st
@@ -0,0 +1,6 @@
+tests
+testTint
+	self assert: (MDLColor tint: #orange) equals: MDLColor orange.
+	"Ensure String and Symbol works"
+	self assert: (MDLColor tint: 'orange') equals: MDLColor orange.
+	self assert: (MDLColor tint: #orange) asRGBA equals: 'rgba(255,152,0,1)'
\ No newline at end of file
diff --git a/src/Material-Design-Tests-Colors.package/MDLColorTests.class/instance/testTintCode.st b/src/Material-Design-Tests-Colors.package/MDLColorTests.class/instance/testTintCode.st
new file mode 100644
index 0000000..2449a29
--- /dev/null
+++ b/src/Material-Design-Tests-Colors.package/MDLColorTests.class/instance/testTintCode.st
@@ -0,0 +1,6 @@
+tests
+testTintCode
+	self assert: (MDLColor tint: #orange code: #'800') asRGBA equals: 'rgba(239,108,0,1)'.
+	"Ensure String and Symbol works"
+	self assert: (MDLColor tint: 'orange' code: #'800') asRGBA equals: 'rgba(239,108,0,1)'.
+	self assert: (MDLColor tint: 'orange' code: '800') asRGBA equals: 'rgba(239,108,0,1)'.
\ No newline at end of file