They do and I tried a couple different colors based on years before and after when my boat was built and they were not very close to matching. I had a gelcoat guy mix and match gelcoat that came out perfect.Spectrum makes gelcoat and patch kits with various shades of Grady whites and colors from the late 1980s on. You do not have to mix any dyes and the color match gets you near perfect results. Spectrumcolor.com
The website is spectrumcolor.comI can’t sean to find the spectrum kits anymore which were easy to get. Since then I’ve been using this in Amazon. Depending on how faded your Grady is, it’s a very close match. View attachment 39234