Randomizer

This node can be used to add color variation when this material is assigned to many objects. It's useful to add variation to the foliage. It's also possible to make variation based on Object parts. The object parts are the groups of polygons that are connected with edges, these groups land to the same color using this node.

The Random node has few color variation parameters that will generate colors in the specified range of color hue, saturation, value and gamma. If some component shouldn't be variable just fix it's begin/end values to the same point.

Sometimes it can be useful to fix the output of Random node to just Black & White using the checkbox and connect it to the Gradient Ramp node where the color pallete is specified with step interpolation mode. Using this combination it's possible to setup the frequency of generating certain colors for many objects that will receive resulting values. In the example below the green color appearance frequency is higher than others.