Choose ONE of the following colors for your stamped concrete accent color. The release is a color hardener we add to the top of your concrete slab to give you stamped concrete a two-toned appearance. We recommend choosing a darker color than the concrete color or your slab so it stands out more. If lighter or similar in color, you risk the chance of the release color not showing up. If you aren't sure what to pick, check out some of our favorite color combinations.