When it comes to the wires for an AC compressor, the colors can vary depending on the specific unit. However, there are a few colors that are more commonly used than others. The most common colors for these wires are black, white, and green. Black is typically used for the power wire, white is usually used for the ground wire, and green is often used as the wire that controls the compressor. These colors can vary depending on the manufacturer of your AC unit, so it is important to check with them before making any changes.