Well since we really don't know you or your car well - I'll just throw my .02 in the ring.
Black = lots of body prep time and it has to be pretty flawless. Also IMO, too many black cars.

Silver = Need good technique to stay away from tiger striping plus, not sure how well an 'A' pick up would look silver. A darker gold instead maybe.

Blue = not sure what shade that Washington Blue is, but most, not all, blues don't do much for me (I'm somewhat color blind so that might temper my likes)

There are lots of bright colors or two tones that will set the PU off. Too many folks use muted colors - and not that they are bad, but why go to the trouble and expense of building something that ends up being another ho-hum in a line of cars at a show or cruise-in. Also, the 'A's are small, so show it off.

Of course, these are just my opinions and since I seldom shy from one..............