You can make the background colour transparentbut you cant do any kind of graded alpha levels where background meets image, so you will get jagged edges.
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StickFigureNinja is worried he may be on the list,
Sat 10 Oct 2009, 14:29,
archived)
This makes sense...
whenanimalsattackhumans clad in global hypercolour,
Sat 10 Oct 2009, 14:32,
archived)