232 thumper

Hi All -
I just bought the PIAA replacement front valance which allows me to mount real fog lights on my truck and still retain a factory looking install. It's a nice piece - made of the same material as the factory part. I really want amber fog lights. I have a set of Hella 500's, but they only come in white. Can I simply replace the bulb, or do I have to find a yellow lense? Any one know which is better?

Any of you guys use that yellow tinted clear bra on lights?

Thanks -