I've seen it, but not done it. When I was a kid my friends mom let them paint their floor by walking in different colors of paint and walking around. We did handprints on the walls and some of the dressers, too. Anyway, I think you should seal it with a clear sealer when you are done. I found one by DAP that is water based so easy clean up and it holds up very well. I used it on the oad in bathroom. I was worried about the dampness, but in 15 or so years there is no sign of damage. Good luck. I hope you will share pictures when you are done.