you could try something like OMG-Dark from Gnome-Look, theme must have both gtk2 and gtk3 and Cinnamon. I use that and the window frames from MintDark http://linux.softpedia.com/get/Desktop- ... 5852.shtml
but don't know if it's been updated to the new Cinnamon. Not using Cinnamon at the moment.[have Xfce] Reformatted my Harddrive to make things simpler and got rid of the Win7 partition while I was at it. after playing with Mint Linux on the NetBook Win7 was like walking in molasses up to my knees and that is even after I maxed out the RAM for it. Looks like I need to put Cinnamon on a partition and see how this are going and get some updated experience. For the last 6mths was only going to the Win7 partition to keep it updated anyway so decided I didn't need it anymore.