CamDawg's hard work to design and build the G3 skin and make it work, CamDawg's site, and CamDawg's decision on what to support and what not to support - I think probably if you want another skin enabled, you can PM him and ask, but the only skin available, enabled, updated, and working is the standard G3 skin he built. (Hey - or jcompton could build an alternate skin for PPG, enable more than the default on his site and forums, and share the data with CamDawg - but unfortunately, that would mean CamDawg has to support it - so really that doesn't help CamDawg either).
If you use the older skins by keeping cache data, you will get increasing numbers of errors due to changes with the site host, increasing font issues, and missing data.