Bar tape - color suggestions

[malkin]

If you're feeling patriotic, you could go red, white, and blue.

Or how 'bout a harlequin pattern wrap?
http://www.wastedlife.org/bike/harlequin/index.html

[Desert Tortoise]

If you just want to get an idea of what a particular color of bar tape would like, you can get a scrap of fabric or whatever you have handy and put it around the bars to see, generally, what it would look like.

I did something similar with my cages. I wanted to see what red cages would look like on my bike and all I had handy in the right shade of red was a fabric measuring tape. I wrapped around the old cages to get an idea.

I recently tried white shoelaces to see what white cable housing would look like and realized it wouldn't make much of a difference on my bike. Glad I saved myself the trouble.

[Atlas]

I was going to suggest orange since it's wonderful with navy, but if you're not a fan I second the apple green recommendation. I love bright colors though. A light blue might look nice too if it's a lighter shade of the navy.