Living in Florida, I think you may need color restorer made by Maguire's or something like that. I deepens the color and does great, just look at where I live. LOL
Jim
I've used it, used on an older fiberglass boat it fills in the pits and leaves a shine. It's not the mother of fixalls for old fiberglass but ok, I ended up repainting most of boat about 2 years ago and am very pleased with the outcome.