Advice on Costa Sunglasses?

[jsethl13]

I decided to spend the money on a nice pair of Costa sunglasses. I wanted to get info from any owners out there. I'm not sure what the lens colors are all about. I know one is good for every day use, one is good for fishing Bluewater, and one is good for fishing fresh water. At least that's what I've heard. I mainly fish in the marsh and a few bass ponds but I also plan on using them for my days on the road. Can you guys give me any info on which colors have been most helpful in those situations. Or does it even matter?