Simple Diffuse Substance Painter -

Add a second fill layer above with a different base color and mask it.

<surfaceMaterial> <name>Simple_Diffuse_Matte</name> <shader>pbr-metal-rough</shader> <!-- ONLY diffuse channel used --> <channels> <diffuse> <color>0.8 0.6 0.4</color> <!-- warm clay tone --> <texture>diffuse_map.png</texture> </diffuse> simple diffuse substance painter