Allows you to change any color resource.The Color Editor has two modes:
The Color Sliders option is the default. Move the red, green, and blue sliders to mix the color you wish. The color in the Color box changes as you move the sliders. When you click Apply, the selected color is recorded in the Resource Editor and represented as a six-digit hexadecimal number preceded by the pound (#) symbol.
Note: In versions of Motif before 1.1, UIL does not support hexadecimal representation. Using a custom color results in a run-time error in your compiled UIL program. You can write custom colors to app-defaults files.