Oddly enough, I just today received a quote from a local pool company for a Loop-Loc cover for our pool...so this is fresh in my mind.
We were quoted a $250 upcharge if we wanted blue, black, gray, or tan....the standard color is green.
Even though they're more costly, I'm going to go with a solid Ultra-Loc cover & pump, as I really don't want any rainwater getting in the pool over the winter. (LOL...this could be read by some as "I don't want to think about the pool over the winter!"). From what I've read here, a solid cover can make the pool opening in the spring easier (depending on how early the pool is opened).