[Typo3] Any tips for getting RTE background color picker to work

[Paul Matthews]

I have been unable to get the background colour button to take effect in 
the RTE. I've tried using it in color picker mode (where you pick a 
colour rather than specifying a hex value and I've tried predefinig 
color classes in root's TSconfig in order to drop down a few specific 
colors). It seems any change I make defaults back to white the next time 
I click on the button. I was wondering if anyone has had any success in 
using this feature

Thanks
Paul