Every automated lighting fixture manufacturer selects the wavelengths their color mixing system will produce, and therefore it can be difficult to get different fixture types to match when color mixing. Some manufacturers will use more saturated colors than others. Their lights may appear brighter as you color mix, but you might have trouble getting deep reds and greens. Unfortunately, your console cannot help you with these physical limitations, but sometimes there are offsets you can adjust in the desk. In addition, with the use of palettes or presets, you can store different values for different fixtures in the same location. This lets you then simply select your “purple” palette and feel comfortable that all the fixtures will go to the same purple color (assuming you made them all match when you created the palette).
—From “Feeding the Machines” by Brad Schiller, PLSN, April, 2013, page 56