Transparent water colors are put up in boxes containing nine colors, and as you reduce them in the proportion of one part of color to eight of water, a single box will last a long time. They can be bought of almost any dealer in artist's materials, and are designated as Florentine, Egyptian, Grecian, and by other names. Care should be used in procuring those which are pure and fresh. The colors are yellow, blue, rose, violet, magenta, flesh, brown, gold and black. The labels on the bottles give directions for mixing.