User Interface and Player Hand Model Replacement?

Mmkay. Is there a way to replace the User Interface and the Gordon’s hand model to it’s original state? As I was downloading addons I must’ve picked up something that replaced the files. Please…It’s annoying to see a silly blue and purple UI accompinied by a poorly detailed rebel skin.

Did you replace the original files? Or are they overrided by an addons?
If they are overrided just find that addon and delete it,
Else i guess backup your addons and reinstall…