Someone was waffling between red and some shade of gray / silver and I chimed in with:
I would pick red on the Elise for 2 reasons:
1) Safety: the darn car is LOW and any help in being seen by the buffoons in Explorers on their cell phones will help
2) Fun: it's a toy.
The first reason would preclude me from ever buying one in a shade of silver or gray. I had a silver NSX and I was practically invisible. My wife (gf at the time) has a yellow one. It was amazing how different the same traffic on the same commute would react to the two cars. I was constantly getting cut off in the silver car and NEVER in the yellow one. Heck, I could swear that the sleeping masses in the left lane would wake up and move over when I came up behind them in the yellow one.
The second reason led me to my color choice. My Elise will be CO (if my turn ever gets here)...