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).



Greyscale Color




Figure 1: Parameters for the Greyscale Color texture



Greyscale Color




Figure 2: A Grayscale Color node connected to the Diffuse input on a Diffuse material node.