[css-color-4] computed value of color(xyz ...) is color(xyz-d65 ...) fix w3c#6834

Author: svgeesus

css-color-4/Overview.bs

@@ -827,6 +827,18 @@ Resolving <<color>> Values</h3>
 			<pre class="lang-css"><span class="swatch" style="--color: goldenrod"></span> color(display-p3 0.823 0.6554 0.2537)</pre>
 		</div>
 
+		For colors specified in the ''xyz'' [=color space=],
+		which is an alias of the ''xyz-d65'' [=color space=],
+		the computed and used value
+		is in the ''xyz-d65'' [=color space=].
+
+		<div class="example" id="wx-xyz-computed">
+			<p>For example, the computed value of</p>
+			<pre class="lang-css"><span class="swatch" style="--color: rgb(95.1% 53.3% 33%)"></span> color(xyz 0.472 0.372 0.131)</pre>
+			<p>is</p>
+			<pre class="lang-css"><span class="swatch" style="--color: rgb(95.1% 53.3% 33%)"></span> color(xyz-d65 0.472 0.372 0.131)</pre>
+		</div>
+
 <h4 id="resolving-other-colors">Resolving other colors</h4>
 
 	This applies to [=system colors=]
@@ -5020,6 +5032,7 @@ Changes</h2>
 </h3>
 
 <ul>
+	<li>Computed value of color(xyz ...) is color(xyz-d65 ...)</li>
 	<li>Added srgb-linear to interpolation colorspaces</li>
 	<li>Updated Changes from Colors 3 section</li>
 	<li>Added Resolving OKLab and OKLCH values section</li>