The Greyscale Color node generates a float value, which node networks use as an input. When connected to a Color input, the result is a greyscale color, with 0 being equivalent to black, and 1 being equivalent to white (Figure 1). In the following illustration, the NodeGraph Editor window is used to clearly illustrate the association of the various texture nodes.
Figure 1: The Greyscale Color node connected to the DiffuseAmount of diffusion, or the reflection of light photons at different angles from an uneven or granular surface. Used for dull, non-reflecting materials or mesh emitters. input of a Diffuse materialUsed for dull, non-reflecting materials or mesh emitters..