To adjust the contrast, fade, monochrome, and background color settings of a DWF underlay from the Properties palette
The default value for contrast is 25 on a scale from 0 (low) to 100 (high).
The default value for fade is 25 on a scale from 0 (darker) to 80 (lighter).
The default setting for monochrome is Off.
The default setting for Adjust Colors for Background is Yes.
The appearance of the DWF underlay is updated in real-time as you make adjustments in the Properties palette.