Really it's your personality... go with what you like...
Just a suggestion... If you get a brighter color you have to take into account other things like the tolerances between the panels... depends on the car... most people don't notice but the panel tolerance really gives that expensive car look that subconsciously lets you know that a 3000GT body is a piece of shit and that a Porsche is like a crafted jewel... if the panels don't match really tight, the brighter color shows it -- just take a look at this pic <img src="http://www.webmaster-post.com/98blue.jpg"> the panels don't even line up so like I was saying the (black) gaps between panels show up more with a brighter color... just like if you do woodworking -- you would never use black wood putty to fill in gaps for a lighter wood... also you got to figure in the hardware on most cars is black -- like vents, tires and mirrors and shit... some cars look really bad in brighter colors for this reason... especially for example on some Cameros where certain parts of the body are always black, even if the car is painted white -- this always looks like shit... If you get black, all the hardware usually matches the body, plus your wheels will stand out more because of the contrast with the body.