Drawing with Blender to use in Microsoft Agent Character Editor

I tried the proposed solution from TheGryphonRider as quoted below.

And it works pretty fine when viewing the pictures, but when i load all my images into Microsoft Agent Character Editor, the color became this funny color.
/uploads/default/original/3X/0/9/09510b9bdc7e4760ef57f4cb8ed3da40702aff3d.jpgstc=1&d=1226992363

The original picture that copy from QuickTime with 256-depth looks this:

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