These are some xbm files i got from a friend and converted to tiff, and put alpha in, and then colorized.  (The alpha in the heads is 50%, looks pretty good when draging over other stuff!)

If you're not in the know, the above characters appear on Mystery Science Theater 3000 on Comedy Central (the only reason to have cable).  If you really want to know more look in alt.tv.mst3k or let me know and i'll send you the FAQ from said group.  (I know it's around here somewhere)