[css-color-5] Fix error in example caused by w3c@59972ba

Author: svgeesus

css-color-5/Overview.bs

@@ -942,15 +942,15 @@ Relative color syntax is only applicable to the non-legacy RGB syntactic forms.
 	<a>legacy color syntax</a> would be incorrect
 
 	<pre>
-		rgba(from <span class="swatch" style="--color: darkblue"></span> 16 32 b / 0.5 )
+		rgba(from <span class="swatch" style="--color: darkblue"></span> darkblue 16 32 b / 0.5 )
 	</pre>
 </div>
 
 <div class="example">
 	Instead, use
 
 	<pre>
-		rgb(from <span class="swatch" style="--color: darkblue"></span> 16 32 b / 0.5 )
+		rgb(from <span class="swatch" style="--color: darkblue"></span> darkblue 16 32 b / 0.5 )
 	</pre>
 
 	This takes the sRGB value of darkblue (0 0 139) and replaces