Answer:
I can move even when you are still. I can be one or many.
I can be cracked, I can be made. I can be told, I can be played.
What stays on the ground but never gets dirty?
Break it and it is better, immediately set and harder to break again.
When liquid splashes me, none seeps through. When I am moved a lot, liquid I spew. When I am hit, color I change. And color, I come in quite a range. What I cover is very complex, and I am very easy to flex.
Break me and I am better immediately set and harder to be broken again.