Review

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@@ -6803,21 +6803,17 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
 
   <!--en-GB--><h4 id="colours">Legacy colors</h4>
 
-  <p>Some obsolete legacy attributes parse colors in a more complicated manner, using the
+  <p>Some obsolete legacy attributes parse colors using the
   <!--en-GB--><dfn id="rules-for-parsing-a-legacy-colour-value">rules for parsing a legacy color
-  value</dfn>, which are given in the following algorithm. When invoked, the steps must be followed
-  in the order given, aborting at the first step that returns a value. This algorithm will return
-  either a CSS color or an error.</p>
+  value</dfn>, given a string <var>input</var>. They will return either a CSS color or failure.</p>
 
   <ol>
-   <li><p>Let <var>input</var> be the string being parsed.</p></li>
-
-   <li><p>If <var>input</var> is the empty string, then return an error.</p></li>
+   <li><p>If <var>input</var> is the empty string, then return failure.</p></li>
 
    <li><p><span>Strip leading and trailing ASCII whitespace</span> from <var>input</var>.</p></li>
 
-   <li><p>If <var>input</var> is an <span>ASCII case-insensitive</span> match for the
-   string "<code data-x="">transparent</code>", then return an error.</p></li>
+   <li><p>If <var>input</var> is an <span>ASCII case-insensitive</span> match for "<code
+   data-x="">transparent</code>", then return failure.</p></li>
 
    <li>
     <p>If <var>input</var> is an <span>ASCII case-insensitive</span> match for one of the <span
@@ -6851,20 +6847,19 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
    </li>
 
    <li><p>Replace any <span data-x="code point">code points</span> greater than U+FFFF in
-   <var>input</var> (i.e., any characters that are not in the basic multilingual plane) with the
-   two-character string "<code data-x="">00</code>".</p></li>
+   <var>input</var> (i.e., any characters that are not in the basic multilingual plane) with "<code
+   data-x="">00</code>".</p></li>
 
    <li><p>If <var>input</var>'s <span>code point length</span> is greater than 128, truncate
    <var>input</var>, leaving only the first 128 characters.</p></li>
 
-   <li><p>If the first character in <var>input</var> is a U+0023 NUMBER SIGN character (#),
-   remove it.</p></li>
+   <li><p>If the first character in <var>input</var> is U+0023 (#), then remove it.</p></li>
 
    <li><p>Replace any character in <var>input</var> that is not an <span data-x="ASCII hex
-   digits">ASCII hex digit</span> with the character U+0030 DIGIT ZERO (0).</p></li>
+   digits">ASCII hex digit</span> with U+0030 (0).</p></li>
 
    <li><p>While <var>input</var>'s <span>code point length</span> is zero or not a multiple of
-   three, append a U+0030 DIGIT ZERO (0) character to <var>input</var>.</p></li>
+   three, append U+0030 (0) to <var>input</var>.</p></li>
 
    <li><p>Split <var>input</var> into three strings of equal <span>code point length</span>, to
    obtain three components. Let <var>length</var> be the <span>code point length</span> that all of
@@ -6874,7 +6869,7 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
    data-x=""><var>length</var>-8</span> characters in each component, and let <var>length</var> be 8.</p></li>
 
    <li><p>While <var>length</var> is greater than two and the first character in each
-   component is a U+0030 DIGIT ZERO (0) character, remove that character and reduce <var>length</var> by one.</p></li>
+   component is U+0030 (0), remove that character and reduce <var>length</var> by one.</p></li>
 
    <li><p>If <var>length</var> is <em>still</em> greater than two, truncate each component,
    leaving only the first two characters in each.</p></li>
@@ -50287,8 +50282,8 @@ ldh-str       = &lt; as defined in <a href="https://www.rfc-editor.org/rfc/rfc10
   element's <span data-x="concept-fe-value">value</span> to a string representing the serialization
   of a CSS color.</p>
 
-  <p class="note">In this state, there is always a CSS color picked, and there is no way to set the
-  value to the empty string.</p>
+  <p class="note">In this state, there is always a CSS color picked, and there is no way for the end
+  user to set the value to the empty string.</p>
 
   <p>The <dfn element-attr for="input"><code data-x="attr-input-alpha">alpha</code></dfn> attribute
   is a <span>boolean attribute</span>. If present, it indicates the CSS color's alpha component can
@@ -50318,7 +50313,7 @@ ldh-str       = &lt; as defined in <a href="https://www.rfc-editor.org/rfc/rfc10
      data-x="attr-input-colorspace-display-p3">display-p3</code></dfn>
      <td><dfn data-x="attr-input-colorspace-display-p3-state">Display P3</dfn>
      <td>The CSS color is converted to the <span>'display-p3'</span> color space, e.g., "<code
-     data-x="">color(display-p3 0.84 0.19 0.72 / 0.6)</code>".
+     data-x="">color(display-p3 1.84 -0.19 0.72 / 0.6)</code>".
   </table>
 
   <p>The attribute's <i data-x="missing value default">missing value default</i> and <i
@@ -133733,33 +133728,33 @@ html, body { display: block; }</code></pre>
 
   <p>When a <code>body</code> element has a <code data-x="attr-body-bgcolor">bgcolor</code>
   attribute set, the new value is expected to be parsed using the <span>rules for parsing a legacy
-  color value</span>, and if that does not return an error, the user agent is expected to treat the
+  color value</span>, and if that does not return failure, the user agent is expected to treat the
   attribute as a <span data-x="presentational hints">presentational hint</span> setting the
   element's <span>'background-color'</span> property to the resulting color.</p>
 
   <p>When a <code>body</code> element has a <code data-x="attr-body-text">text</code> attribute, its
   value is expected to be parsed using the <span>rules for parsing a legacy color value</span>, and
-  if that does not return an error, the user agent is expected to treat the attribute as a <span
+  if that does not return failure, the user agent is expected to treat the attribute as a <span
   data-x="presentational hints">presentational hint</span> setting the element's
   <span>'color'</span> property to the resulting color.</p>
 
   <p>When a <code>body</code> element has a <code data-x="attr-body-link">link</code> attribute, its
   value is expected to be parsed using the <span>rules for parsing a legacy color value</span>, and
-  if that does not return an error, the user agent is expected to treat the attribute as a <span
+  if that does not return failure, the user agent is expected to treat the attribute as a <span
   data-x="presentational hints">presentational hint</span> setting the <span>'color'</span> property
   of any element in the <code>Document</code> matching the <code data-x="selector-link">:link</code>
   <span>pseudo-class</span> to the resulting color.</p>
 
   <p>When a <code>body</code> element has a <code data-x="attr-body-vlink">vlink</code> attribute,
   its value is expected to be parsed using the <span>rules for parsing a legacy color value</span>,
-  and if that does not return an error, the user agent is expected to treat the attribute as a <span
+  and if that does not return failure, the user agent is expected to treat the attribute as a <span
   data-x="presentational hints">presentational hint</span> setting the <span>'color'</span> property
   of any element in the <code>Document</code> matching the <code
   data-x="selector-visited">:visited</code> <span>pseudo-class</span> to the resulting color.</p>
 
   <p>When a <code>body</code> element has an <code data-x="attr-body-alink">alink</code> attribute,
   its value is expected to be parsed using the <span>rules for parsing a legacy color value</span>,
-  and if that does not return an error, the user agent is expected to treat the attribute as a <span
+  and if that does not return failure, the user agent is expected to treat the attribute as a <span
   data-x="presentational hints">presentational hint</span> setting the <span>'color'</span> property
   of any element in the <code>Document</code> matching the
   <code data-x="selector-active">:active</code> <span>pseudo-class</span> and either the <code
@@ -133962,7 +133957,7 @@ br[clear=all i], br[clear=both i] { clear: both; }</code></pre>
 
   <p>When a <code>font</code> element has a <code data-x="attr-font-color" undefined>color</code>
   attribute, its value is expected to be parsed using the <span>rules for parsing a legacy color
-  value</span>, and if that does not return an error, the user agent is expected to treat the
+  value</span>, and if that does not return failure, the user agent is expected to treat the
   attribute as a <span data-x="presentational hints">presentational hint</span> setting the
   element's <span>'color'</span> property to the resulting color.</p>
 
@@ -134572,13 +134567,13 @@ table {
   <p>When a <code>table</code>, <code>thead</code>, <code>tbody</code>, <code>tfoot</code>,
   <code>tr</code>, <code>td</code>, or <code>th</code> element has a <code data-x="">bgcolor</code>
   attribute set, the new value is expected to be parsed using the <span>rules for parsing a legacy
-  color value</span>, and if that does not return an error, the user agent is expected to treat the
+  color value</span>, and if that does not return failure, the user agent is expected to treat the
   attribute as a <span data-x="presentational hints">presentational hint</span> setting the element's
   <span>'background-color'</span> property to the resulting color.</p>
 
   <p>When a <code>table</code> element has a <code data-x="attr-table-bordercolor">bordercolor</code>
   attribute, its value is expected to be parsed using the <span>rules for parsing a legacy color
-  value</span>, and if that does not return an error, the user agent is expected to treat the
+  value</span>, and if that does not return failure, the user agent is expected to treat the
   attribute as a <span data-x="presentational hints">presentational hint</span> setting the
   element's <span>'border-top-color'</span>, <span>'border-right-color'</span>,
   <span>'border-bottom-color'</span>, and <span>'border-left-color'</span> properties to the
@@ -134766,7 +134761,7 @@ hr[color], hr[noshade] { border-style: solid; }</code></pre>
 
   <p>When an <code>hr</code> element has a <code data-x="attr-hr-color">color</code> attribute, its
   value is expected to be parsed using the <span>rules for parsing a legacy color value</span>, and
-  if that does not return an error, the user agent is expected to treat the attribute as a <span
+  if that does not return failure, the user agent is expected to treat the attribute as a <span
   data-x="presentational hints">presentational hint</span> setting the element's
   <span>'color'</span> property to the resulting color.</p>
 
@@ -135958,7 +135953,7 @@ marquee {
 
   <p>When a <code>marquee</code> element has a <code undefined data-x="attr-marquee-bgcolor">bgcolor</code>
   attribute set, the value is expected to be parsed using the <span>rules for parsing a legacy color
-  value</span>, and if that does not return an error, the user agent is expected to treat the
+  value</span>, and if that does not return failure, the user agent is expected to treat the
   attribute as a <span data-x="presentational hints">presentational hint</span> setting the element's
   <span>'background-color'</span> property to the resulting color.</p>
 
@@ -136341,8 +136336,8 @@ progress { appearance: auto; }</code></pre>
 
     <ol>
      <li><p>If the element has a <code data-x="">bordercolor</code> attribute, and applying the
-     <span>rules for parsing a legacy color value</span> to that attribute's value does not result
-     in an error, then return the color so obtained.</p></li>
+     <span>rules for parsing a legacy color value</span> to that attribute's value does not return
+     failure, then return the color so obtained.</p></li>
 
      <li><p>Otherwise, if the element has a parent element that is a <code>frameset</code> element,
      then return the <span>frame border color</span> of that element.</p>