It actually looks nice on the design wall with the white peeking thtough, so I think white or off-white would work. You have so many colors to choose from! Black always makes a statement, so I would lay the blocks out on black to see whether I liked that look. It will be beautiful.
Meant to add - this is not the traditional broken dishes block. If you set this block on point and put a square around it (triangles on each side) it would be broken dishes.