Do you use the playlist player on your mobsite? Here are some custom skins I have made that you are welcome to use in your site.. Provided you don't modify my work.. Just copy and paste the link below into the playlist link for background..  More to come!!
Xat's are one of the most popular features a mob site uses.. So here are some cool backgrounds that I use on my stuff.. I have dozens more to add but this will get ya started..  They are all sized to 640X480 and can be constrained by the xat code..