I was wondering if anybody knows where the default icon images are for the various tools that you see on the shelves. Basically I want to make a custom shelf, but since a couple of the tools seem to have the same icon, I want to switch 'em up a bit, though I don't want to create whole new icons at this point. Thanks for any help...

PS It will only accept xpm, bmp, and dib files and the default folder it points to when I click "change image..." in the shelf editor has none of those in it