To Set the Active Color Using a True Color Value

Open the Active Color dialog ( Drawing > Home > Attributes > Color ).
Select the True Color tab.
From the Color Model menu, select the color model to use.
Do one of the following:

Enter values for Hue, Saturation, and Value.

or
From the color rectangle, select a color.

The new active color displays in the preview area.
Click OK.
The new active color displays on the Attributes group in the ribbon.