Faber-Castell Gelatos These color crayons provide vibrant color on various materials. When used with water, they create a watercolor-like effect with transparency. I was forced to buy these a few years ago when I took some kind of course, and I haven't used them since, just left them in the closet (-_-). Even now, I don't know how to use them, so I'd love for someone who will use them to have them! Type: Art Supplies Item: Watercolor Supplies