Davis Colors is America’s largest manufacturer of concrete dyes. These colors come from local concrete plants prepared to make ready mix concrete with color design mixes. Davis-colored concrete is also made in bagged form to be added directly into a concrete truck.. Below is shown the various colors that can be utilized to dye your concrete to give it a unique look. Fairfax Contractor typically likes to utilize the dyes manufactured by Davis Color because many of the ready-mix concrete companies in the northern Virginia area utilize this product mixed at the concrete plant. Typically the darker the color, the more expensive the concrete will be because more coloring agents will be needed to produce the darker colors.