[css-color-5] 各種更新

editorial: Add example with omitted colorspace
w3c/csswg-drafts@f805b23

Added a second form of the light-dark() function, which takes a pair of images rather than a pair of colors
w3c/csswg-drafts@52c5538

editorial: Remove incorrect bikeshed syntax that was preventing publication

Author: triple-underscore

css-color5-ja.html

@@ -174,8 +174,8 @@
 ●●options
 
 spec_title:CSS Color Module Level 5
-spec_date:2026-03-15
-trans_update:2026-03-18
+spec_date:2026-03-23
+trans_update:2026-03-24
 source_checked:250423
 page_state_key:CSS
 original_url:https://drafts.csswg.org/css-color-5/
@@ -284,6 +284,8 @@
 t.modern-hsla-syntax:#typedef-modern-hsla-syntax
 t.legacy-device-cmyk-syntax:#typedef-legacy-device-cmyk-syntax
 t.modern-device-cmyk-syntax:#typedef-modern-device-cmyk-syntax
+t.light-dark-color:#typedef-light-dark-color
+t.light-dark-image:#typedef-light-dark-image
 
 t.alpha-value:~CSSCOLOR#typedef-color-alpha-value
 t.hue:~CSSCOLOR#typedef-hue
@@ -862,6 +864,7 @@
 	多過ぎ:too many
 	少な過ぎ:too few
 	~RET 空~文字列:nothing is serialized.
+	構文解析-時の:parse-time
 
 	●CSS
 For:for:用途
@@ -1347,7 +1350,7 @@ <h2 title="The &lt;color&gt; syntax">2. `color^t 構文</h2>
 	| `system-color$t
 	| `contrast-color()$t
 	| `device-cmyk()$t
-	| `light-dark()$t
+	| `light-dark-color$t
 
 `color-base@t
 	= `hex-color$t
@@ -1397,11 +1400,11 @@ <h2 title="The &lt;color&gt; syntax">2. `color^t 構文</h2>
 a &lt;system-color&gt; (which depends on the color mode)
 </li>
 	<li>
-`light-dark()$t
+`light-dark-color$t
 （これは、
 色~modeに依存する）
 ◎
-&lt;light-dark()&gt; (which depends on the color mode)
+&lt;light-dark-color&gt; (which depends on the color mode)
 </li>
 	<li>
 `contrast-color()$t
@@ -1573,6 +1576,20 @@ <h3 title="Colorspace for mixing">3.1. 混合-用の色~空間</h3>
 `oklab$v が指定された場合と同じになる。
 】</p>
 
+<div class="example" id="ex-omitted-colorspace">
+<p>
+例えば，次の 2 つは、
+正確に等価になる：
+◎
+For example, these two are exactly equivalent:
+</p>
+
+<pre class="lang-css">
+color-mix(in oklab, firebrick, goldenrod)
+color-mix(firebrick, goldenrod)
+</pre>
+</div>
+
 		</section>
 		<section id="color-mix-percent-norm">
 <h3 title="Percentage Normalization">3.2. 百分率の正規化</h3>
@@ -5933,14 +5950,21 @@ <h2 title="Reacting to the used color-scheme: the light-dark() Function">7. 使
 <p>
 この関数には、［
 2 個の色をとる形, 2 個の画像をとる形
-］がある：
+］がある。
+画像と色を併用するよう試みた場合の結果は、
+構文解析-時の~errorになる。
 ◎
-There are two forms of this function: one takes a pair of colors while the other takes a pair of images.
+There are two forms of this function: one takes a pair of colors while the other takes a pair of images. Attempting to use one image and one color will result in a parse-time error.
 </p>
 
 <pre class="prod">
 `light-dark@f
-	= light-dark( [`color$t, `color$t] | [`image$t, `image$t])
+	= `light-dark-color$t
+	| `light-dark-image$t
+`light-dark-color@t
+	= light-dark(`color$t, `color$t)
+`light-dark-image@t
+	= light-dark(`image$t, `image$t)
 </pre>
 
 <p>
@@ -7602,9 +7626,18 @@ <h2 title="Changes">変更点</h2>
 18.1. Since the Working Draft of 13 January 2026
 </dt>
 	<dd>
-（まだ無い）
+`light-dark$f 関数~用に
+— 2 個の色をとる形に加えて —
+2 個の画像をとる形を追加した。
+（ `12513$issue ）
+◎
+Added a second form of the light-dark() function, which takes a pair of images rather than a pair of colors (Issue 12513)
+</dd>
+	<dd>
+もはや 2 個だけの色に制約されなくなった `color-mix$f に
+3 個の色を伴う例を追加した。
 ◎
-none
+Added a color-mix() example with three colors, now that it is no longer restricted to just two.
 </dd>
 
 	<dt id="changes-20250318">