Bobin17901, da_zman20, Bichur,
My apologies for not responding sooner. My development duties have kept me away from the forums for too long. Is this still an issue? I was able to create an image using a pinkish background color, create an icon from it, and use the Alpha Channel adjustment on the image import form (it's in the lower lefthand corner) to set the upper left pixel as the transparent color, as Bichur suggested. However, there were some issues with the background color still "sticking" to the edges of the inner content. Certainly something to fix in a future patch.