Looks good except you say there should not be a brown outline
Do you see that in AE or only when you export the SWF?
I don’t think that this is introduced by RE:Flex
IF you see this in AE THEN:
I am not 100% on your source pictures are generated (are you making the source images in AE or importing that),
if you apply AE Matte | Simple Choker over and under 0.0
Does the outline go away in one case and does it grow in the other case.
Pierre