Thanks for the offer (at least for giving it a shot)!
Here's the current bitmap of the skills toolbar and minimap/status area:
If you Save Image As you'll find that it's paletted, with the first 7+1 colors already assigned. Feel free to assign the last 8 colors in any way you see fit.
The general layout should preferably stay the same, with the black separating bars remaining in the same location, and the skill order should also stay as is. The still empty box on the left is intended for a selection tool, maybe just the lemmings game cursor (that's what I would have done to keep it simple) or perhaps a gloved hand pinching a lemming (or whatever else you can come up with).
Here are a few screenshots of how it currently looks in game to keep the style consistent (since the Win32 version is so blurry):
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Have fun and thanks!
Zen
Edit: Added image of Main Menu for good measure...
Edit2: Added image of Configuration Menu