Similar to many other Amazonian tribes, the Matsés practice traditional body painting. The red color comes from a natural dye obtained from the crushed seeds of the annatto (achiote) tree. Sometimes the Matses will mix annatto with animal fat and the resulting mixture makes for a particularly bright face paint. In addition to annatto, the Matses will use genipap or huito (Genipa americana) as a black paint. Sometimes they will use wet charcoal to paint their entire bodies which results in a blue-black color of the skin.