color() function parses color string

lib/less/functions.js

@@ -170,6 +170,13 @@ tree.functions = {
     },
     percentage: function(n) {
         return new(tree.Dimension)(n.value * 100, '%');
+    },
+    color: function (n) {
+        if (n instanceof tree.Quoted) {
+            return new(tree.Color)(n.value.slice(1));
+        } else {
+            throw { type: "Argument", message: "argument must be a string" };
+        }
     }
 };