diff --git a/src/destructure-box-shadow.test.ts b/src/destructure-box-shadow.test.ts
index 8b722ca..aad5eb2 100644
--- a/src/destructure-box-shadow.test.ts
+++ b/src/destructure-box-shadow.test.ts
@@ -1,6 +1,6 @@
 import { test, expect, describe } from 'vitest'
 import { destructure_box_shadow } from './destructure-box-shadow.js'
-import { ColorValue, EXTENSION_AUTHORED_AS } from './types.js'
+import type { ColorValue } from './types.js'
 import { color_to_token } from './colors.js'
 
 function create_px_length(value: number): { value: number, unit: string } {
diff --git a/src/index.test.ts b/src/index.test.ts
index 71f45a5..740f5b3 100644
--- a/src/index.test.ts
+++ b/src/index.test.ts
@@ -155,6 +155,13 @@ describe('css_to_tokens', () => {
 		`)
 			expect(actual.color).toEqual({})
 		})
+
+		test('extensions[css-properties] does not yield a type error', () => {
+			let actual = css_to_tokens('a { color: green; }')
+			// Not so much interested in the test result, more looking that this isn't giving a type error
+			let properties = actual.color['green-5e0cf03']!['$extensions'][EXTENSION_CSS_PROPERTIES]
+			expect(properties).toEqual(['color'])
+		})
 	})
 
 	describe('font sizes', () => {
diff --git a/src/index.ts b/src/index.ts
index 2d050fe..ba928ab 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -50,7 +50,7 @@ type ItemsPerContext = Record<string, {
 type TokenID = string
 
 type Tokens = {
-	color: Record<TokenID, ColorToken | UnparsedToken>
+	color: Record<TokenID, ColorToken>
 	font_size: Record<TokenID, UnparsedToken | DimensionToken>
 	font_family: Record<TokenID, FontFamilyToken>
 	line_height: Record<TokenID, UnparsedToken | DimensionToken | NumberToken>
@@ -86,7 +86,7 @@ function get_count(collection_item: number | CssLocation[]) {
 export function analysis_to_tokens(analysis: CssAnalysis): Tokens {
 	return {
 		color: (() => {
-			let colors = Object.create(null) as Record<TokenID, ColorToken | UnparsedToken>
+			let colors = Object.create(null) as Record<TokenID, ColorToken>
 			let unique = get_unique(analysis.values.colors)
 			let color_groups = group_colors(unique)
 
diff --git a/tsconfig.json b/tsconfig.json
index 3904641..59e2b2c 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -27,6 +27,5 @@
 	],
 	"exclude": [
 		"node_modules",
-		"src/**/*.test.ts"
 	]
 }
\ No newline at end of file