Da_smashman , depending on your player's current firmware version, as long as it's v3.5.35, v3.5.37, v9.0.43, it can be themed.
Other than these versions, the tools currently do not support.
There is a complete guide on the re-skinning process here
http://www.mympxplayer.org/how-to-mo...ng-vt1719.html
Be sure to use only your own extracted firmware for theming.