The Color Editor displays 16 million possible colors. There are 60 basic colors and 20 custom color slots available.
To add a custom color:
Do one of the following:
Select a color from the palette with the mouse. You can adjust the luminescence of the color with the slider to the right.
Type in the Hue, Saturation and Luminescence values.
Type in the Red, Green and Blue (RGB) values.
Do one of the following:
Click Add to Custom Colors.
Click OK. This will select the color for you but it will not be available for later use.