[css-color-4][editorial] Update changes

Author: Chris Lilley

css-color-4/Overview.bs

@@ -6384,7 +6384,14 @@ Changes</h2>
 </h3>
 
 <ul>
-	<li>Consistyent serialization of Lightness and number in examples</li>
+	<!-- to 14 Jan 2023 -->
+	<li>Define specified value for Lab, LCH, Oklab, Oklch</li>
+	<li>Define specified value fro other sRGB colors</li>
+	<li>Define specified values for named and system colors</li>
+	<li>Clamp alpha, Lightness, Chroma and Hue at parsed-value time</li>
+	<li>No longer require as-specified hue to be retained</li>
+	<li>Consistent serialization of Lightness and number in examples</li>
+	<li>Minor typos and editorial clarifications</li>
 </ul>
 
 <h3 id="changes-from-20220705">Changes since the