The SpexTones color palette also applies to the company's rubber stair treads, risers and stringers. All textures are available in an array of 12-color combinations in a speckled design. Unlimited custom color combinations are available with a minimum order. All of SpexTones' colors are part of Marley Flexco's FlexTones Color Matching System which allows matching colors across product lines, from cove base and tile, to stair treads and accessories