[css-color-4] a and b are analogous, w3c#8609

Author: svgeesus

css-color-4/Overview.bs

@@ -4375,7 +4375,7 @@ Color Interpolation</h2>
 
 	Interpolation between <<color>> values
 	occurs by first
-	checking the two colors for analogous components 
+	checking the two colors for =analogous components=] 
 	which will be carried forward;
 	then (if required) converting them to a given color space
 	which will be referred to as the <dfn export>interpolation color space</dfn> below,
@@ -4577,6 +4577,14 @@ Interpolating with Missing Components</h3>
 			<td>Hue</td>
 			<td>H</td>
 		</tr>
+		<tr>
+			<td>Opponent a</td>
+			<td>a</td>
+		</tr>
+		<tr>
+			<td>Opponent b</td>
+			<td>b</td>
+		</tr>
 	</table>
 
 	Note: for the purposes of this classification,