Allows you to adjust the chrominance characteristics of the entire image.

Invert

Invert reverses the colors in both Hue and Saturation such that all colors display as their complement.

Hue

Hue varies the tint of all colors in the image. The Hue parameter is measured as degrees on a color wheel from –180 to +180, where 0 does not change the hue. Changing the value of the Hue causes all colors in the image to rotate around the color spectrum. For example, a Hue setting of –20 causes skin tones to look more red, while a Hue setting of +20 causes skin tones to look more green.

Sat (saturation)

Saturation varies the amount of all colors in the image. The Saturation parameter has a value of –100 to +100. Zero is the default. A value of –100 displays as gray tones. Positive values display all colors with more saturation.