Releasing the slider will update the rest of ABox. H S V Hue, Saturation and Value. Hue is a measure of color, the top of the slider equates to red. Moving the H slider down will cycle the color wheel through violet, blue, cyan, green, yellow and orange. A small sample of the pure color appears above the H slider.
Saturation is a measure of color purity.
The top of the S slider represents the pure color as defined by the hue. Moving the slider down reduces the amount color and increases the amount of gray. Value is another term for brightness . The top of the V slider will make the color as bright as it can be. The bottom of the slider is black.