Can we provide a cooling system that depends on colors only?

There are a variety of colors available, including oranges, reds, greens, yellows, blues, clear and pink dye colors. With this variety of dye colors and more to come, the service technician’s ability to properly service and maintain light duty and heavy duty cooling systems properly will be greatly challenged.

But my answer is i dont think it would be effective if possiblecoz many variables involved