Перейдите в таблицу стилей CSS, найдите стили начиная с строки номер 257 по 266:
/* forum Page switches */
.switches {background:#EBD98E;}
.pagesInfo {background:#FFFADF;padding-right:10px;font-size:7pt;}
.switch {background:#FFFADF;width:15px;font-size:7pt;}
.switchActive {background:#D13702;font-weight:bold;color:#FFFADF;width:15px}
a.switchDigit:link,a.switchBack:link,a.switchNext:link {text-decoration:none; color:#000000;}
a.switchDigit:visited,a.switchBack:visited,a.switchNext:visited {text-decoration:none; color:#000000;}
a.switchDigit:hover,a.switchBack:hover,a.switchNext:hover {text-decoration:underline; color:#FF0000;}
a.switchDigit:active,a.switchBack:active,a.switchNext:active {text-decoration:underline; color:#FF0000;}
/* ------------------- */
замените их на:
/* forum Page switches */
.pagesInfo {background:#FFFADF;color:#000;font-size:7pt;padding: 2px 5px;box-shadow: inset 0px 1px 2px rgba(0, 0, 0, 0.22);border-radius: 3px;}
.switch {background:#FFFADF;font-size:10px;color:#000;padding: 2px 5px;box-shadow: inset 0px 1px 2px rgba(0, 0, 0, 0.22);border-radius: 3px;}
.switchActive {background:#D13702;font-size:10px;color:#fff;padding: 2px 5px;box-shadow: inset 0px 1px 2px rgba(0, 0, 0, 0.22);border-radius: 3px;}
a.switchDigit:link,a.switchBack:link,a.switchNext:link {text-decoration:none; color:#000000;}
a.switchDigit:visited,a.switchBack:visited,a.switchNext:visited {text-decoration:none; color:#000000;}
a.switchDigit:hover,a.switchBack:hover,a.switchNext:hover {text-decoration:underline; color:#FF0000;}
a.switchDigit:active,a.switchBack:active,a.switchNext:active {text-decoration:underline; color:#FF0000;}
/* ------------------- */
сохраните, после очистите кеш https://ukit.com/ru/help/kak-ochistit-cahe и готово.