N&N for Theme Improvements (#200)

* N&N for Theme Improvements

Refers to eclipse-platform/eclipse.platform.ui#2114
Co-authored-by: Hannes Wellmann <[email protected]>

news/4.33/platform.html

@@ -156,6 +156,33 @@ <h2>Preferences </h2>
     <h2>Themes and Styling </h2>
     </td>
   </tr>
+  <tr id="new-light-theme"> <!-- https://github.com/eclipse-platform/eclipse.platform.ui/issues/2114 -->
+      <td class="title">Preview Version of Improved Light Theme</td>
+      <td class="content">
+        <p>
+        After many years of stability we have reworked the light theme of Eclipse to follow more modern design principles, similar to other major IDEs:
+        </p>
+        <ol>
+          <li>Lightweight view tab design</li>
+          <li>Flat look - No use of 3D gradients</li>
+          <li>Views use a darker background color.</li>
+        </ol>
+        <p>
+        These improvement are not yet completed but are available as a preview. 
+        </p>
+        <p><img style="max-width: 600px;" src="images/preview-theme.png" alt="Preview Theme"/></p>
+        <p>
+        You can try it out by selecting <em>Light (Preview)</em> on the <b>General > 
+        Appearance</b> preference page. See 
+        <a href="https://github.com/eclipse-platform/eclipse.platform.ui/issues/2114">issue #2114</a>
+        for more details and the motivation behind these changes and to give your feedback. 
+        </p>
+        <p>
+        The improvements in the <em>Light (Preview)</em> theme will be integrated in the standard
+        <em>Light</em> theme once ready and the <em>Light (Preview)</em> will be removed again.
+        </p>
+      </td>
+  </tr>
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