[css-color-4] Initial value for color is CanvasText w3c#4608.

Author: lilles

css-color-4/Overview.bs

@@ -192,7 +192,7 @@ Foreground Color: the 'color' property</h2>
 	<pre class=propdef>
 	Name: color
 	Value: <<color>>
-	Initial: ''black''
+	Initial: ''CanvasText''
 	Applies to: all elements
 	Inherited: yes
 	Percentages: N/A
@@ -2788,6 +2788,7 @@ Changes</h2>
 5 November 2019</a></h3>
 
 <ul>
+	<li>Initial value of the "color" property is now CanvasText</li>
 	<li>Removed confusing gray() function per CSS WG resolution</li>
 	<li>Collect scattered definitions into new
 		<a href="#terminology">Color terminology</a> section</li>