Just did this on a black hull. Spectrumcolor.com has gelcoat paste that matches your boat by brand and color. Color matched perfectly on mine but my first attempt at fill, wet sanding, and polishing back after the fill was pretty rough…. Mixing the paste with the included catalysts was easy but a syringe would have really helped making the fill easy.

I’m sure I’ll ding it again and get plenty of practice soon enough.

Really good feedback from everyone, thank y'all. I'll be going with the Marine Coat so I'll keep everyone posted on how it goes.