Just installed Mint 15 XFCE (very nice linux distro) however the desktop icon text can be hard to read on dark backgrounds. To change the desktop icon text do the following:
cd /home/<youruser>/
nano .gtkrc-xfce
change the below settings to whatever hex colour codes you want:
fg[NORMAL] = "#FFFFFF" fg[SELECTED] = "#FFFFFF" fg[ACTIVE] = "#FFFFFF"
Log out and Log back in again
Done!