I can't see any skin changes happening any time soon, but I did think @Brandon had plans to try and get a custom one made at some point but when they want a four figure sum, it's kind of hard to get one
If I can design you a skin, and get someone to code it will @Brandon consider using it. I am good at coding in html but never in my life have I done Xenforo skins but I have done vBulletin and MyBB
you are more than welcome to PM him an offer, I'm sure he would be greatly appreciated as he is not a designer, just like me
about designing a custom style for AdminBB, be it free or not. I don't think it's something that needs to be discussed in public really