Talens Ecoline Brush Pen Set of 10 Fashion is based on dyes and Gum Arabic. The colors of Talens Ecoline are astonishingly bright and brilliant. If you wish, you can easily decrease the color intensity through thinning with water or with a blender. The set includes chartreuse, pink beige, cold grey light, red violet, scarlet, reddish brown, turquoise blue, ultramarine deep and deep ochre.