Colour in images, fix #374 (#459)

* fix colour->color in svgs, #374

* A couple of lingering colour->color, #374

index.html

@@ -539,7 +539,7 @@ <h2 id="3Defsandabbrevs">Terms, definitions, and abbreviated terms</h2>
       <dd>
         an objective measurement of the visible light intensity, taking into account the sensitivity of the human eye to different wavelengths.
 
-        <p class="note">Luminance and <a>chromaticity</a> together fully define a measured colour.  See <a href="https://colorusage.arc.nasa.gov/lum_and_chrom.php">Luminance and Chromaticity</a>
+        <p class="note">Luminance and <a>chromaticity</a> together fully define a measured color.  See <a href="https://colorusage.arc.nasa.gov/lum_and_chrom.php">Luminance and Chromaticity</a>
         or, for a formal definition [[COLORIMETRY]].</p>
 
       </dd>
@@ -2314,7 +2314,7 @@ <h2>Private field values</h2>
           bit depth
         </li>
         <li>
-          <a href="#3colourType">colour type</a>
+          <a href="#3colourType">color type</a>
         </li>
         <li>
           <a href="#10CompressionCM0">compression method</a>
@@ -7616,7 +7616,7 @@ <h3 id="changes-20230921">Changes since the <a href="https://www.w3.org/TR/2023/
 
     <ul>
       <!-- to 10 Jun 2024 -->
-      <li>Added private bit depth and colour type fields</li>
+      <li>Clarified that bit depth and color type fields can take private values</li>
       <li>Listed both decimal and hexadecimal values in MaxCLL and MaxFALL examples<li>
       <li>Corrected terminology in mDCv section</li>
       <li>Corrected "PNG image" in cHRM section</li>