Eh. I don't have red. It is far more subtle than that outside of full daylight conditions. Near dusk this weekend, on I10 coming back from watching the Big Bend Open Road Race, I had a State Trooper so bored and/or eager to take a closer look that he drove through the ditch to chat with me.
I wasn't even, allegedly, 10% over the limit and I'd been passed periodically prior more than a couple times in the last 1/2 hour. He even went out front to take a good look at the front view....oh, and said nothing about the lack of a license plate.
So I think the shape is just going to grab attention anyway, on visuals.