I've been skinning for the GP2X for years, both the firmware and Gmenu2X but this is my first attempt at a Dingoo theme... holy cow, it was a lot of work. This requires a custom firmware so you can see the system folder - pop the folders under \system\res, choose theme one, change the text to black and you're up an running.
It's a total conversion so the only graphics I left untouched are ones I either couldn't see (like the pedometer stuff) or stuff I couldn't find (like the chinese text when viewing the Album/Artists/etc screens). I worked really hard on this and hope everyone enjoys it, feedback is always welcome.
The download is here - http://dl.openhandhelds.org/cgi-bin/dingoo.cgi?0,0,0,0,50,397
* The screenshot is a mockup... is there a way to take screenshots from within the Dingoo native OS?