I think the best way to find these answers is to look online for things that discuss the characteristics of the color red on the EM spectrum. You will find it is a rather peculiar light frequency. There are things about it, and its reflectiveness that are unique. There are reasons why you can use red lights in a dark room, and why red lights are used as brake lights. It all has something to do with the fact reflected red light waves don't bend or something like that. and I'm sure the fact that water creates the refraction phenomena (which bends light waves) has some part to play. I'm not smart enough to put all these things together, but maybe someone out there can look it up for us and teach us.

good topic,