Tximage is a nice image VIEWER, but what I had in mind was being able to draw, using a bucket-fill tool. QpPhoto offers that, but does not support landscape orientation. Quite e few image editing tools support using a pen, dropper, and lets you select circles or rectangles, but I need a flood-fill tool (also called a bucket-fill tool). Anyone know of anything like that?
So far, I have tried FreeNoteQt, VisualQ, the built-in Imaging program, Sketches of Q, Tximage, and QpPhoto. (Each one is very nice, but lacks one feature or another.) I thought about buying thekompany's tkcpainter, but it is only sold for the "5X series" Zaurus, so I don't know if it will work for the 6000. If it does work, it probably will only support portrait orientation.