Some time ago John Horn (covoxer) made a plugin (Xeus) available which let you do specific bitmap manipulations, such as recolor and retouch bitmaps.
See here: http://xeus.nm.ru/products.dhtml
And mini tutorials 02 & 04 here: http://xeus.nm.ru/tutorials.dhtml
I don't believe it is compatible with newer versions of Xtreme.
Does XXPro4's new bitmap capabilities give you anything like this???
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