[css-color-4] Serialize lch() as itself, per w3c#5825

Author: svgeesus

css-color-4/Overview.bs

@@ -548,7 +548,7 @@ Resolving <<color>> Values</h3>
 	This applies to ''lab()'' and ''lch()'' values.
 
 		The computed and used value
-		is the corresponding CIE Lab color
+		is the corresponding CIE Lab or LCH color
 		paired with the specified alpha channel
 		(as a <<number>>, not a <<percentage>>;
 		and defaulting to opaque if unspecified).
@@ -557,7 +557,7 @@ Resolving <<color>> Values</h3>
 			<p>For example, the computed value of</p>
 			<pre class="lang-css"><span class="swatch" style="--color: rgb(77.61% 36.34% 2.45%)"></span> lch(52.2345% 72.2 56.2 / 1)</pre>
 			<p>is</p>
-			<pre class="lang-css"><span class="swatch" style="--color: rgb(77.61% 36.34% 2.45%)"></span> lab(52.235% 40.165 59.997)</pre>
+			<pre class="lang-css"><span class="swatch" style="--color: rgb(77.61% 36.34% 2.45%)"></span> lch(52.2345% 72.2 56.2)</pre>
 		</div>
 
 	<h4 id="resolving-color-function-values">Resolving values of the ''color()'' function</h4>
@@ -815,7 +815,7 @@ and there shall be no thousands separator.
 
 	The serialized form of ''lch()'' and ''lab()'' values
 	is derived from the [=computed value=]
-	and uses the ''lab()'' form,
+	and uses the ''lab()'' or ''lch()'' forms,
 	with lowercase letters for the function name.
 
 	The component values are serialized in base 10;
@@ -838,11 +838,9 @@ and there shall be no thousands separator.
 
 	<div class="example" id="ex-lch-serial">
 		<p>The serialized value of</p>
-		<pre class="lang-css"><span class="swatch" style="--color: rgb(41.66% 15.34% 90.66%)"></span> lch(37% 105 305)</pre>
-		<p>is the string "lab(37% 60.23 -86.01)"
-		and not "lab(37.00% 60.23 -86.01)"
-		or "lab(37.% 60.23 -86.01)"
-		or "lch(37% 105 305)".
+		<pre class="lang-css"><span class="swatch" style="--color: rgb(41.66% 15.34% 90.66%)"></span> lch(37% 105.0 305.00)</pre>
+		<p>is the string "lch(37% 105 305)",
+			not "lch(37% 105.0 305.00)".
 	</div>
 
 	The precision with which ''lab()'' component values are retained,
@@ -872,7 +870,7 @@ and there shall be no thousands separator.
 	<div class="example" id="ex-lch-alpha">
 		<p>The serialized value of</p>
 		<pre class="lang-css"><span class="swatch" style="--color: rgba(99.56%, 6.09%, 57.02%, 0.93)"></span> lch(56.2% 83.6 357.4 /93%)</pre>
-		<p>is the string "lab(56.2% 83.51 -3.79 / 0.93)"</p>
+		<p>is the string "lch(56.2% 83.6 357.4 / 93%)"</p>
 	</div>
 
 	<h4 id="serializing-color-function-values">Serializing values of the ''color()'' function</h4>
@@ -920,8 +918,7 @@ and there shall be no thousands separator.
 		the serialization is not sufficient because the name and the link to the profile are also needed.
 	-->
 
-	Note: If the colorspace is sRGB, the colorspace is explicitly required in the serialized result.
-
+	Note: If the colorspace is sRGB, the colorspace is still explicitly required in the serialized result.
 
 	The precision with which ''color()'' component values are retained,
 	and thus the number of significant figures in the serialized value,