Not exactly on-topic, not exactly off topic, doesn't fit in the OT-creativity thread - Goes here, obviously.
http://bub-n-bros.sourceforge.net/I mentioned this a long time ago; I'd redone most of the graphics for this game. More recently, I revised all graphics to a much higher standard and submitted them to the author, and the dragons / bubbles now use a 384 color palette.
Something I would have liked to have during this project is higher precision than 8bit -- the bubbles got significantly quantized because I had to manipulate the brightness curves of the greyscale originals (which had a LOT of detail/smoothness - done mainly through recursive shading with the help of a little plugin that sets FGcolor == midway between current FG and BG colors.) -- the various colored bubbles -- eg EXTEND ended up somewhat chunked:
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Currently, you can see the new graphics ingame, or in two places on the website - at the bottom of the main page, and on the credits page; the other website graphics (mainly screenshots) haven't been updated yet.. Individual screenshots don't show upgrades very well.