On the Editor tab, in the Character group, click the Colors button.
On the Color menu, select Add Color.
Click the arrow, to open the Color dialog. Select a color and click OK.
In the Name box, type the name of your new color. This is useful, if you want to change the color value of a color in all of the documentation at one time.
The new color is saved in the color list on the [General Settings] > Editor > Colors page andon the color menu.
On this page you can edit your color or add new colors.