There are more than 16 million true colors from which you can choose. True colors are defined using 24 bit color.
Even with so many colors available, you can quickly choose a color from the display of basic colors or by clicking the color palette. Alternatively, if you know the values used to define the desired color, you can enter the Hue, Saturation, and Luminance (HSL) values, or you can enter the Red, Green, Blue (RGB) values.
To select a true color
Click Select Color in the desired dialog box, such as Layers, Properties, or Multiline Text. The Color dialog box opens.
Click the True Color tab.
Select one of the following two color models:
HSL color model
RGB color model
Specify the desired color.
Click OK button.
COLOR: Sets the color for new objects
System Variables Reference
CECOLOR: Sets the color of new objects