Tesselations: Variations of lineoleum

Ocatgons and squares are a standard tiling pattern using linoleum. I'm sure everyone has seen these many times.

Often, the octagons are all one color and the squares are another single color.

In this version, there are two colors of octagons and the same two colors of squares.

Now, two colors of octagons and a third color for all the squares.

And finally, three colors of octagons and a fourth color for all the squares.