Material Editor > Maps rollout > Click a Map button. > Material/Map Browser > Checker
The Checker map applies a two-color checkerboard pattern to the material. The default checker map is a pattern of black and white squares. Checker maps are 2D procedural maps. The component checkers can be either colors or maps.
Tip: Turning on Noise for a Checker map can be an effective way to create irregular patterns with a natural appearance.
To change the color of one set of squares:
In the Checker Parameters rollout, click a color swatch to display the Color Selector.

Soften—Blurs the edges between the checkers. A little blurs a lot.
Swap—Switches the position of the two checkers.
Color #1—Sets the color of one of the checkers. Click to display the Color Selector.
Color #2—Sets the color of one of the checkers. Click to display the Color Selector.
Maps—Selects a map to use within the area of the checker color. For example, you could put an additional checkerboard within one of the checker colors.