This color refers to the secondary background color for Graphic Display window. This secondary color is used when the "ColorScreenGradient" value is NOT set to 0. The gradient location defines the location for this secondary color.
Entry Name: ColorScreen2
Entry Type: Whole Number to specify a decimal color number. The default value is 16777215 (White)
It is best to alter this value inside of PC-DMIS from the Screen Color dialog box. You can access the dialog box from the Edit | Graphic Display Window | Screen Color menu item. This value serves as a place holder for the last used value.