There are two ways to change the color of concrete,
Both ways are easy and simple to make. You can also do both!
For example, If you want the concerete to be black, first add 4 to 6 scoops of pigment to your concrete mix. When the concrete has dried, finalize the concrete surface with Aqua Tint- concrete dye, color called Ebony (two to four layers) and you have black concrete.