The Above article on mint community site (http://community.linuxmint.com/tutorial/view/1146) needs a small correction. Its says the ".gtkrc-2.0". file in the home directory needs to be edited as root, but on my system, its owned by me, the user or owner. So thtione file can be edited the user without needing root. I tried to add this in comment, but it needs another registration, So adding it here.
Nice tip from gloriousigor