All of the Colors tools are extensively described in the toolbox chapter, Section 5, “ Color Tools ”:
Section 5.1, “ Color Balance ”
Section 5.2, “ Hue-Saturation ”
Section 5.3, “ Colorize ”
Section 5.4, “ Brightness-Contrast tool ”
Section 5.5, “ Threshold ”
Section 5.6, “ Levels ”
Section 5.7, “ Curves ”
Section 5.8, “Posterize”
