MediaWiki:Monobook.css

/* CSS placed here will affect users of the MonoBook skin */

/* Monobook Skin Header Tabs */ background:#1C3855 !important; border:solid #FFFFFF !important; border-top-left-radius:10px; border-top-right-radius:10px; }
 * 1) p-cactions li, #p-cactions li.selected, #p-cactions li.new {

background-color:#1C3855 !important; border:2px solid #1C3855 !important; border-top-left-radius:10px; border-top-right-radius:10px; color:#fff380; }
 * 1) p-cactions li a {