Where to buy paintable 08 tow mirror caps?

[sr20steve]

So I just put some 08-10 tow mirrors on my 06 today. And I was looking and looking for some paintable caps but all I could find is chrome ABS ones, so I went ahead and bought them. Well I was talking to my buddy about getting them painted to match to body, and he says that he has done them (He is a professional paint/ body guy) for a couple customers and has said that they eventually will start to bubble. He said he knows that you can get them unpainted because customers have brought them to him.

So this leads to my question. Does anyone know where I could purchase unpainted 08-10 tow mirror caps?

TIA! Steve