it's in that thread i linked but basically if you just want the colours removed from the boardindex (who's online etc) just edit
Boardindex.php
find and remove:
, mem.shop_nameStyle
find and replace:
// Edited for Display Name CSS item
$link = '<a ' . ((!empty($row['shop_nameStyle'])) ? ('style=\'' . str_replace('\'', '', $row['shop_nameStyle']) . '\' ') : '') . ' href="' . $scripturl . '?action=profile;u=' . $row['ID_MEMBER'] . '">' . $row['realName'] . '</a>';
replace with:
// Some basic color coding...
if (!empty($row['onlineColor']))
$link = '<a href="' . $scripturl . '?action=profile;u=' . $row['ID_MEMBER'] . '" style="color: ' . $row['onlineColor'] . ';">' . $row['realName'] . '</a>';
else
$link = '<a href="' . $scripturl . '?action=profile;u=' . $row['ID_MEMBER'] . '">' . $row['realName'] . '</a>';
Make sure to backup Boardindex.php before you do anything