(Shader Effect) 1.1 - Cinema 4D
Color . Luminance . Bump . Displacement
Channels & Texture Mask
Texture image is applied here as a mask.
The left one rendered with the physical engine, to the right with a standard engine.
HUE and Saturation were applied on these.
Some of them have a Noise and Fresnel shaders as a mask.
Curved, Corroded, Oxidized.
The left one rendered with 2 color channels, to the right rendered with 4 colors (standard engine).