Leave the frame white, paint the fork white and get a chain that's not painted ANY color, then...

Replace the following with polished / silver (that is, metal colored, not spray painted) parts:
Seatpost and collar
cranks and chainring
stem and bars
brake lever

Next, brown saddle and matching grips.


Finally, wheels with polished/silver box section rims, spokes, and hubs.


Unless you're trying to make your bike even more garish with the spray paint...