Comment out rootcommands

From Fluxbox-wiki

If, for example, you have installed the commonbox-extra styles from gentoo portage you will have many styles that contain a rootCommand and they will set the background for you. I personally hate that and like to decide what I think looks best with a style. A simple sed command will fix this up. Simply move to the directory where you installed the styles and run:

 sed -i 's,rootCommand,!rootCommand,g' *

If you get a permission denied error you will need to run this with root privlage.