MCL and color XOR-ing

[P.CHEN@AppleLink.Apple.COM (Chen, Paul,APD)]

Hello all you happy people,
 
I would like to know how to draw in color and in xor mode. Right now, if I
set xor mode on, all subsequent drawing is done only in black and white.
I assume there's something else I should do. I do have color windows; I
set the :color-p keyword to initialize instance of a window to t.
 
Paul