Update the color palette. (#5959)

cult/theme.json

@@ -33,7 +33,30 @@
 			"style": true,
 			"width": true
 		},
-		"color": true,
+		"color": {
+			"palette": [
+				{
+					"slug": "foreground",
+					"color": "#000000",
+					"name": "Foreground"
+				},
+				{
+					"slug": "background",
+					"color": "#ffffff",
+					"name": "Background"
+				},
+				{
+					"slug": "primary",
+					"color": "#761028",
+					"name": "Primary"
+				},
+				{
+					"slug": "tertiary",
+					"color": "#FCFAFA",
+					"name": "Tertiary"
+				}
+			]
+		},
 		"custom": {
 			"gap": {
 				"horizontal": "min(30px, 5vw)",