They will disappear for sure, red is a camouflage color, that's why rain forest parrots are red, they look black in the trees. It's due to the short wavelength of red, it's the first to go (after black). But they do look sexy. I'll put some reflective tape on my spaz balls and give them a go.
Simon

 

You still get a halo its just more noticeable towards the centre.

They also come in white yellow and orange