Spectrum Gel Coat Mixing Instructions, This is a how to video for matching gelcoat colors. 3. I plan to brush PK !¦¡É ² N [Content_Types]. I think Spectrum Color still has a how to video on their site. com. In September, 2011 iboats welcomed Spectrum Color to our family of products. Powered by vBulletin® Version 3. The ideal mixer speed will change as the volume of the drum decreases. Spectrum gelcoat repair kits provide high-quality products to permanently fix gelcoat damage. Learn Detailing, Painting, & Fiberglass - SpectrumColor Gel, thinning, mixing ??? - I am in the process of fixing the job if "blueprinting" I had done on my boat a couple years ago.