I am working on a full Batman Dark Knight Theme here. I made an Icon set for Gnome but had to pull it for now because it wasn't working right. I will make a GnoMenu Icon Theme as well. I had done a full Batman theme for KDE way back when but Evil Taco's GnoMenu button got me wanting it for Gnome so here it is. I have found a Cursor set but do not know if they can be converted to X11 yet. working on all the elements.