It is a mustard blonde color (light mustard) with active mustard and olive pigment that can be used for watercolor tattoos or tattoos that have many different colors, as well as this color for blue lip tattoos and body portraits. Used. This color has a warm (olive) pigment and is one of the most popular colors in the mustard color family. I Must Brown Leopard Tattoo Color Output is without a doubt the best mustard on the market. Note that i-Brown paints are mostly water-based, but do not use ordinary water to dilute them at all, and be sure to use distilled water to dissolve these paints.