How to use the color sliders
Before we start, we would like to give you some instructions on how to use the color sliders; The Color Mix sliders allow you to refine the hue, saturation, and luminance of specific colors. Hue changes the character or “flavor” of the color. Saturation makes the color more or less intense; and Luminance adjusts the brightness of the color.
For the colors we don’t want to show in our picture, we don’t need to use the Hue slider. So, for every color you want to remove from your picture you need to adjust
the Brightness (Luminance) and the Saturation of the color.
For every color you want to remove, bring the Saturation slider to -100 and the Luminance up to +100. After you’ve done this for all the colors except the one you want to show. Voila! here is your perfect selective color picture!