Thread:ImmortalHero101/@comment-33569838-20180121004610/@comment-30086847-20180121053043

a[href$="/wiki/User:WIKIAUSER"], .rainbowanimation { background: -webkit-linear-gradient(#9b59b6 0%, #2980b9 16%,#3498db 17%, #2ecc71 48%, #f1c40f 49%, #e67e22 76%, #e74c3c 100%); background-repeat: repeat; background-position: 0 0; background-size: 100% 50px; -webkit-background-clip: text; -webkit-text-fill-color: transparent; -webkit-animation: stripes 2s linear infinite; animation: stripes 2s linear infinite; font-weight: 800; font-family: Arial; }

a[href$="/wiki/User:WIKIAUSER"]:hover, .rainbowanimation:hover, .premiumcolor { background: -webkit-linear-gradient(#00CCFF 0%, #03C9FF 1%, #05C7FF 2%, #08C4FF 3%, #0AC2FF 4%, #0DBFFF 5%, #0FBDFF 6%, #12BAFF 7%, #14B8FF 8%, #17B5FF 9%, #1AB2FF 10%, #1CB0FF 11%, #1FADFF 12%, #21ABFF 13%, #24A8FF 14%, #26A6FF 15%, #29A3FF 16%, #2BA1FF 17%, #2E9EFF 18%, #309CFF 19%, #3399FF 20%, #3396FF 21%, #3394FF 22%, #3391FF 23%, #338FFF 24%, #338CFF 25%, #338AFF 26%, #3387FF 27%, #3385FF 28%, #3382FF 29%, #3380FF 30%, #337DFF 31%, #337AFF 32%, #3378FF 33%, #3375FF 34%, #3373FF 35%, #3370FF 36%, #336EFF 37%, #336BFF 38%, #3369FF 39%, #3366FF 40%, #3661FF 41%, #3B57FF 42%, #3D52FF 43%, #3D52FF 44%, #404CFF 45%, #4247FF 46%, #4542FF 47%, #473DFF 48%, #4A38FF 49%, #4C33FF 50%, #4A38FF 51%, #473DFF 52%, #4542FF 53%, #4247FF 54%, #404CFF 55%, #3D52FF 56%, #3D52FF 57%, #3B57FF 58%, #3661FF 59%, #3366FF 60%, #3369FF 61%, #336BFF 62%, #336EFF 63%, #3370FF 64%, #3373FF 65%, #3375FF 66%, #3378FF 67%, #337AFF 68%, #337DFF 69%, #3380FF 70%, #3382FF 71%, #3385FF 72%, #3387FF 73%, #338AFF 26%, #338CFF 74%, #338FFF 75%, #3391FF 76%, #3394FF 77%, #3396FF 78%, #3399FF 79%, #309CFF 80%, #2E9EFF 81%, #2BA1FF 82%, #29A3FF 83%, #26A6FF 84%, #24A8FF 85%, #21ABFF 86%, #1FADFF 87%, #1CB0FF 88%, #1AB2FF 89%, #17B5FF 90%, #14B8FF 91%, #12BAFF 92%, #0FBDFF 93%, #0DBFFF 94%, #0AC2FF 95%, #08C4FF 96%, #05C7FF 97%, #03C9FF 98%, #00CCFF 99%); background-repeat: repeat; background-position: 0 0; background-size: 100% 50px; -webkit-text-fill-color: transparent; -webkit-background-clip: text; }

I think you need to insert the code above into the Special:CSS page of your wiki (you need admin). Replace 'WIKIAUSER' with the user you want