Xorg 6.9.0 cursor shadowing (a.k.a ARGB cursors?)

[gbburkhardt at verizon.net (Glenn Burkhardt)]

Anyone know how to turn off cursor shadowing in Xorg 6.9.0?  Or is this called 
"ARGB cursors"?

I have a combination framegrabber/video board that has color key graphics 
overlay, to display live NTSC video in a window (Integral Tech Flashpoint 
4xl).  In the latest Xorg release, there's now a magenta halo around the 
mouse cursor (magenta is the color key for the live video).  The chipset is 
the S3 Savage IX.

TIA...