OOF2: The Manual
Color — Various ways of describing a color.
Subclasses are listed as they appear in the GUI and (in parentheses) as they appear in scripts.
RGBColor) -- Color specified as a Red, Green, Blue triplet.
HSVColor) -- Color specified by Hue, Saturation, and Value.
Gray) -- A gray color.
RGBAColor) -- Color specified as a Red, Green, Blue, Alpha quartet.
HSVAColor) -- Color specified by Hue, Saturation, Value, and Alpha.
TranslucentGray) -- A gray color with an opacity component.