Add dark wasteland teheme

README.md

@@ -34,6 +34,16 @@ The skin has no build step and no PHP dependencies. Its font stacks use `Space G
 
 4. Clear the browser cache, then load Roundcube. The login view, mailbox list, compose view, menus, controls, and status messages should all use the new palette.
 
+## Eternity Wasteland
+
+`eternity-wasteland` is the dark, warm-industrial Eternity variant. It uses the Wasteland palette: charcoal surfaces, parchment text, olive actions, rust-orange signals, and an orange technical grid.
+
+Install it with the same procedure above, copying `eternity-wasteland` instead of `eternity`, then configure:
+
+```php
+$config['skin'] = 'eternity-wasteland';
+```
+
 ## Docker Install
 
 ### Docker Compose (persistent)