Warren,
Spectrum is who we, and a ton of other builders deal with. They are pretty good, as you can see by the list of who they color match for. Here's a link to the Proline page of their website.
Spectrum Gelcoat. If you call Jim at Proline CS, this is exactly the info he'll give you. You just get it a little quicker from me...

BTW, if we used HK or Cooks for your Gel, that's what they'll use...good to know. Cooks, HK, Armorkote, they all use different formulations for the "same" color. But it ain't the same, if you know what I mean...
