Bug 575731: Make test more stable in the face of various themes. r,a=sicking

content/base/test/test_bug564863.xhtml

@@ -16,6 +16,9 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=564863
   <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
 <style>
+* {
+  color: rgb(0, 0, 0);
+}
 #div_id {
   color: rgb(10, 10, 10);
 }