Icons that were simply resized with gimp, and that need a real fix by an artist:
cr22-action-money.png
cr22-action-black_sum.png
cr22-action-text_bottom.png
cr22-action-text_top.png
cr22-action-multirow.png
cr22-action-middle.png
cr22-action-sort_incr.png
cr22-action-sort_decrease.png
cr22-action-mergecell.png