Do we have any capabilities to edit the grey transparent windows that serve as the background to majority of the user interface? Are these windows being scaled and drawn as required, or are they bitmap images that can be edited? Hopefully it's the latter.

I've been toying around with making the theme a little more context appropriate by doing away with the transparent windows and bringing in stone and Roman paintings and mosaics. I've also designed a new battle interface that not only uses 25% less vertical screen space but is also matching the antiquity setting much better. Eventually I hope to overhaul every interface aspect if possible, however it really all comes down to whether the UI is being scaled or using bit maps. Any help for an artist trying to make sense of code would be appreciated.