When selecting objects using a Crossing window (left to right) or a Window (right to left) the color that appears can be changed using either CROSSINGAREACOLOR or WINDOWAREACOLOR.
But these have no impact when executing the AREA command to Add or Subtract objects or as user selects points creating a boundary with area filled in as Green during Add vs Red during Subtract.
Perhaps there should be similar system variables like AREAADDCOLOR and AREASUBTRACTCOLOR to make it possible for the user to change the colors to even the option to turn these colors off?
