Revert root color and background normalization

Commit: 907890983e

The change caused problems with `body` background color no longer
bubbling up the the `html` element.

It also prevented you from setting `color` or `background` styles on
`html` before the normalize.css styles.

It might not be possibly to safely address – within normalize.css –
the problem that it was trying to avoid.

Fix gh-188

CHANGELOG.md

@@ -1,5 +1,7 @@
 == HEAD
 
+* Revert root `color` and `background` normalizations.
+
 == 2.1.1 (April 8, 2013)
 
 * Normalize root `color` and `background` to counter the effects of system

normalize.css

@@ -56,21 +56,15 @@ audio:not([controls]) {
    ========================================================================== */
 
 /**
- * 1. Prevent system color scheme's background color being used in Firefox, IE,
- *    and Opera.
- * 2. Prevent system color scheme's text color being used in Firefox, IE, and
- *    Opera.
- * 3. Set default font family to sans-serif.
- * 4. Prevent iOS text size adjust after orientation change, without disabling
+ * 1. Set default font family to sans-serif.
+ * 2. Prevent iOS text size adjust after orientation change, without disabling
  *    user zoom.
  */
 
 html {
-    background: #fff; /* 1 */
-    color: #000; /* 2 */
-    font-family: sans-serif; /* 3 */
-    -ms-text-size-adjust: 100%; /* 4 */
-    -webkit-text-size-adjust: 100%; /* 4 */
+    font-family: sans-serif; /* 1 */
+    -ms-text-size-adjust: 100%; /* 2 */
+    -webkit-text-size-adjust: 100%; /* 2 */
 }
 
 /**