Two-tone paint - to be or not to be?

My 02 double cab is silver. I like the look of 2-tone with metalic gray at bottom and also same gray bumpers and wheel flares. I see a lot of Ford F-150 and F-250 2-tone trucks, and thought it might look good on my Tacoma, but since I don't see any others do it, I wonder if others think it looks cheezy or something.
How do you all feel about 2-tone? I am also not sure if it is a good idea to paint the plastic valance. I know a lot of bumpers nowadays are plastic, but I don't want to paint it if the paint won't stick.