Don't resolve extended color keywords during parsing

LayoutTests/fast/dom/Window/getMatchedCSSRules-with-pseudo-elements-complex.html

Index: LayoutTests/fast/dom/Window/getMatchedCSSRules-with-pseudo-elements-complex.html
diff --git a/LayoutTests/fast/dom/Window/getMatchedCSSRules-with-pseudo-elements-complex.html b/LayoutTests/fast/dom/Window/getMatchedCSSRules-with-pseudo-elements-complex.html
index 2be9ed78f4965b91277b8f828fb42faa1b08e837..35867e7326536857d8f113a7fd6008a63e5050b5 100644
--- a/LayoutTests/fast/dom/Window/getMatchedCSSRules-with-pseudo-elements-complex.html
+++ b/LayoutTests/fast/dom/Window/getMatchedCSSRules-with-pseudo-elements-complex.html
@@ -57,14 +57,14 @@
           testRunner.dumpAsText();
 
       var tests = [
-        { 'elementId' : 'firstChild', 'expectedValue' : 'rgb(165, 42, 42)' },
-        { 'elementId' : 'secondChild', 'expectedValue' : 'rgb(0, 255, 255)' },
+        { 'elementId' : 'firstChild', 'expectedValue' : 'brown' },
+        { 'elementId' : 'secondChild', 'expectedValue' : 'cyan' },
         { 'elementId' : 'thirdChild', 'expectedValue' : 'red' },
-        { 'elementId' : 'fourthChild', 'expectedValue' : 'rgb(255, 0, 255)' },
+        { 'elementId' : 'fourthChild', 'expectedValue' : 'magenta' },
         { 'elementId' : 'firstParent', 'expectedValue' : 'green' },
         { 'elementId' : 'secondParent', 'expectedValue' : 'lime' },
         { 'elementId' : 'thirdParent', 'expectedValue' : 'blue' },
-        { 'elementId' : 'fourthParent', 'expectedValue' : 'rgb(220, 20, 60)' },
+        { 'elementId' : 'fourthParent', 'expectedValue' : 'crimson' },
       ];
 
       function runTests()