Dyes are greatly expanding the artist’s palette with colors ranging from soft pastels to vivid reds, oranges, yellows, and purples. Dyes can be used by itself or in conjunction with acids stains as well. Essentially, concrete dyes are translucent, penetrating color solutions. Unlike acid-based stains, they do not react chemically with concrete. Instead, they contain very fine coloring agents that penetrate into the concrete surface.