Cement floor. Lightly sand cement, wash thoroughly. Dilute oil based paint *small Rustoleum with paint thinner. 1 paint/4-5 parts thinner. Wet floor w/water, small areas. Pour small amounts in random patterns. Lightly swirl colors. Don't overdo. Continue until floor is done. Let dry. This floor: dark brown, sand, gray. 2nd coat: rust, metallics and original color. Can add more coats. Let dry between. Polyurethane. Paint will be dull until poly is added.
I am sharing these photos because I spent so much time researching options for our basement floor and wish I could have found more before/after photos. We decided to try H&C Semi-Transparent Concrete Stain in Expresso. My dad applied two coats of stain and two coats of the top sealer. I love the results!