diff --git a/mode/css/css.js b/mode/css/css.js
index 1e6d2ddbc75886d18f82d7f1bc5c6f360845cebc..63698c15c97f88bb9f53d37e94191c4f0f3adc43 100644
--- a/mode/css/css.js
+++ b/mode/css/css.js
@@ -273,6 +273,8 @@ CodeMirror.defineMode("css", function(config, parserConfig) {
         override = "string-2";
       else if (valueKeywords.hasOwnProperty(word))
         override = "atom";
+      else if (colorKeywords.hasOwnProperty(word))
+        override = "keyword";
       else
         override = "error";
     }