diff --git a/extra/sass-mode.el b/extra/sass-mode.el
index 09ae9d52..c8edf469 100644
--- a/extra/sass-mode.el
+++ b/extra/sass-mode.el
@@ -62,7 +62,11 @@ text nested beneath them.")
   `(("\"\\([^\"\\\\]\\|\\\\.\\)*\"" 0 font-lock-string-face)
     ("!\\w+" 0 font-lock-variable-name-face)
     ("#[0-9a-fA-F]\\{0,6\\}" 0 font-lock-preprocessor-face)
-    (,(regexp-opt '("true" "false")) 0 font-lock-constant-face)
+    (,(regexp-opt
+       '("true" "false" "black" "silver" "gray" "white" "maroon" "red"
+         "purple" "fuchsia" "green" "lime" "olive" "yellow" "navy"
+         "blue" "teal" "aqua"))
+     0 font-lock-constant-face)
     (,(regexp-opt '("and" "or" "not")) 0 font-lock-keyword-face)))
 
 (defconst sass-syntax-table