Inherit dark-mode defaults from Material's built-in slate scheme (#319)

Documentation styling has been updated to use the Material "slate" dark color scheme instead of the previous "wled" theme. Color palette configurations and CSS styling overrides have been realigned for consistency, ensuring a cohesive visual experience across all documentation pages.

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: softhack007 <91616163+softhack007@users.noreply.github.com>

Author: Copilot

docs/assets/stylesheets/extra.css

@@ -1,7 +1,7 @@
 
-/* Custom color scheme */
+/* Custom color scheme — extends Material's built-in "slate" dark scheme */
 
-[data-md-color-scheme="wled"] {
+[data-md-color-scheme="slate"] {
   --md-hue: 232; /* [0, 360] */
   --md-primary-fg-color: #FFA000; /*WLED Orange*/
   /*--md-primary-fg-color: #7289DA; /*Blurple*/
@@ -28,7 +28,7 @@
   --md-typeset-blockquote-color: hsla(var(--md-hue), 75%, 90%, 0.6);
 }
 
-[data-md-color-scheme="wled"] .md-typeset table a {
+[data-md-color-scheme="slate"] .md-typeset table a {
   color: var(--md-typeset-a-color);
 }
 

mkdocs.yml

@@ -22,8 +22,8 @@ theme:
     - content.action.edit
     # - toc.integrate
   palette:
-    - scheme: wled
-      primary: cyan #mostly overriden in extra.css
+    - scheme: slate
+      primary: cyan #mostly overridden in extra.css
       accent: orange
       toggle: 
         icon: material/weather-sunny