There's no reason you can't put a little color on your bridge....I wouldn't be putting a dark stain on though. I guess a matter of taste. Old bridges get colored just from dirt, rosin, and time. To get a little more mellow, on a new bridge, i'll put some Olde English Scratch cover on. Common at super markets in the household area. It comes in different shades for different woods....I'd go with the light still. Great for scratches and touch ups too.
Some luthiers put on a base coat that they normally use for the base coat when putting color on the body.
Some people like to sand off the sharp edges of the bridge so it looks more rounded. Always be carful of the way the grain goes when sanding and coloring.
(I hope I haven't helped in opening a can of worms here)
And, billio, please fill out your profile.