Forums / Cotonti / General / Colored username?

I don't know what your intentions are in terms of changing the colors, but if you are familiar with PHP this is the function you would have to alter:

system/functions.php Line 1710

function cot_build_user($id, $user, $extra_attrs = '')
{
	global $cfg;

	if (!$id)
	{
		return empty($user) ? '' : $user;
	}
	else
	{
		return empty($user) ? '?' : cot_rc_link(cot_url('users', 'm=details&id='.$id.'&u='.$user), $user, $extra_attrs);
	}
}