MediaWiki:Common.css

/* CSS placed here will be applied to all skins */
a {
    color: #14b8a6 !important;
}
a:visited {
    color: #0d9488 !important;
}
a:hover, a:focus {
    color: #2dd4bf !important;
}

/* Change highlight colors */
.mw-highlight {
    background-color: #14b8a6 !important;
}

/* Change other blue elements as needed */
.mw-ui-progressive {
    background-color: #0d9488 !important;
    border-color: #0d9488 !important;
}