Hmmm...just about to make those icons when I though of what your problem might be if the on/off icons are always blue. Check to see if cookies are enabled to remember you in the control panel. They should be in order for this to work correctly. If not than a "session hash" is used to try to track you from place to place to remember who you are but that may not be reliable which is why cookies are used.

Let me know if that fixes it before I play with the icons and mess up something that may actually be ok. Thanks