Suggestions

[iyenal]

Example :
<a href="private.php?action=send&amp;uid=32696" title="Send this user a private message" class="postbit_pm"><span>PM</span></a>
The animation will take only the place of the text <span>PM</span> ;all the links to the server by the CMS are preserved and not modified so the CMS can change it himself (PHP and MySQL) depending of the user without adressing to the animation.
The bridge between the page and the server aren't modified, only the bridge between the user and the page.
And for the colors, anything is stored in the CSS stylesheet, and it can be modified from the MyBB settings management.