Managed to get a Classic border on the tray overflow flyout. Same goes for the Taskbar. I also managed to fix the overbrightening on 8.1 Jump Lists. I'll add a screeny of that tomorrow (if I remember .-. ).
I was going to try to do moar stuff first, but yeah, I guess I can share it now (or rather, next time I'm on my computer), along with what I have so far. I can't quite recall the class name, but I'll get you that too ASAP.
Also be warned that my current work may cause severe mental scarring due to its sheer sloppiness - I have no idea what I'm doing, all I know is it seems to be working .-.