Fix 3 digit hex parsing, the G/B channels were swapped.

Reported by Elijah Insua in issue 1.

Author: deanm

csscolorparser.js

@@ -141,8 +141,8 @@ function parseCSSColor(css_str) {
       var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
       if (!(iv >= 0 && iv <= 0xfff)) return null;  // Covers NaN.
       return [((iv & 0xf00) >> 4) | ((iv & 0xf00) >> 8),
-              (iv & 0xf) | ((iv & 0xf) << 4),
               (iv & 0xf0) | ((iv & 0xf0) >> 4),
+              (iv & 0xf) | ((iv & 0xf) << 4),
               1];
     } else if (str.length === 7) {
       var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.