There were probably very few in the 1910 census who listed their occupation as manufacturers of "colors, etc," but Edwin Binney did. He was the founder of Crayola Crayons. I just wonder what the "etc" stood for.
You can search the 1910 United States Federal Census for your own relatives at Ancestry.com regardless of what color was involved with their employment. If you don't have a subscription to Ancestry.com, you can read our suggestions for a 14 day free trial here.