Thread:Bdj610/@comment-27756776-20180319191317/@comment-32763141-20180320021256

Try copying and pasting these three lines in MediaWiki:Wikia.css on your wiki:
 * a[href="/wiki/User:[USERNAME HERE]"] {text-shadow:0px 0px 7px #[GLOW COLOR] !important;color:[MAIN COLOR] !important}
 * a[href="/wiki/Message_Wall:[USERNAME HERE]"] {color:[MAIN COLOR] !important}
 * a[href$="/[USERNAME HERE]"] {color:[MAIN COLOR] !important}

Be sure to replace [USERNAME], [MAIN COLOR], and [GLOW COLOR] with what you want.