Chess Board (single piece)

This was originally a post from my website since not a lot of people go there I decided to post this here as well go to jimothysquid.weebly.com for all my creation.
I had a tough time deciding whether or not to extruded up or down when making this. I decided to go with up because (and hear me out) you and easily color the dividing lines if they are sticking out. If your printer has multiple filament chambers you probably already know what to do to get the colors different on the board but for