[doug_porsche]

from a physics standpoint, no red is not ideal.
White reflects laser better, and that nice reflective front license place is the main target for laser.

step down from laser, radar. Metallic paint is radar's friend.

step down from that, and leaving physics behind, flashy vehicles (and red is flashy), get noticed.

I drove a white Miata for years. You, hmm, are not flashy in a white Miata. I got lucky multiple times because white Miatas never look like they are going fast.