[css-color-4] Remove linkifying of canvastext keyword (it messes up the grammar). Remove lingering and incorrect stylesheet rule setting html to 'color:black'. w3c#4863

Author: tabatkins

css-color-4/Overview.bs

@@ -198,7 +198,7 @@ Foreground Color: the 'color' property</h2>
 	<pre class=propdef>
 	Name: color
 	Value: <<color>>
-	Initial: ''CanvasText''
+	Initial: CanvasText
 	Applies to: all elements
 	Inherited: yes
 	Percentages: N/A
@@ -3058,10 +3058,6 @@ Default Style Rules</h2>
 	The following stylesheet is informative, not normative.  This style sheet could be used by an implementation as part of its default styling of HTML4, HTML5, XHTML1, XHTML1.1, XHTML Basic, and other XHTML Family documents.
 
 	<pre class="lang-css">
-	html {
-		color: black;
-	}
-
 	/* traditional desktop user agent colors for hyperlinks */
 	:link { color: blue; }
 	:visited { color: purple; }