MediaWiki:Monobook.css

 /** <pre><nowiki> */
 /***** BACKGROUND COLORS FOR CONTENT ACTIONS *****/
 /***** taken from Common.css into Monobook.css due to monobook-specific stuff *****/
 
 /* Colour of pseudo NS Special (light grey) */
 
 .ns--2 #p-cactions li, .ns--2 #p-cactions li a { background: #f4f4f4; }
 
 /* Colour of NS Project + Project_talk (light sky blue) */
 
 .ns-4 #p-cactions li, .ns-4 #p-cactions li a { background: #f8fcff; }
 
 .ns-5 #p-cactions li, .ns-5 #p-cactions li a { background: #f8fcff; }
 
 /* Colour of NS MediaWiki + MediaWiki_talk (light grey) */
 
 .ns-8 #p-cactions li, .ns-8 #p-cactions li a { background: #f4f4f4; }

 .ns-9 #p-cactions li, .ns-9 #p-cactions li a { background: #f4f4f4; }

 /* Colour of NS Manual + Manual_talk (light bluish violet) */
 
 .ns-100 #p-cactions li, .ns-100 #p-cactions li a { background: #f3f3ff; }
 
 .ns-101 #p-cactions li, .ns-101 #p-cactions li a { background: #f3f3ff; }

 /** </nowiki></pre> */