You don't really need different types of wood to make these, tho it would be nice; especially if you want a really fancy set. You can use a light color wood, dye or stain the top and bottom pieces, and keep the center piece its natural color. Or, especially for use by kids, just cut them out of decent pieces of solid wood, and use dots of paint to highlight the dilled dots. Come to think of it, the pieces of flooring my kid gave me would make a nice set. Or three.
JOAT If you can read this you're in range.