When a particular location is current, elements on all other visible locations are dimmed. This makes it easier to insert and edit elements on the current location because it is more obvious which elements are part of the current location.
By default, elements on other locations are dimmed by 90%. You can adjust the dimming so that it is lighter or darker according to your preference.
To change the dimming percentage:
Select Settings
> Program Settings or click the Program Settings button on the
Settings toolbar.
In the Program Settings dialog, select the Workspace tab.
Type the desired dimming percentage in the Dimming Percentage edit box, or use the arrows to scroll up or down through a list of values.
Click OK.