Color QLCDNumber with style sheet

Trying to color a QLCDNumber with a style sheet - not working.

Here's what I tried:
QLCDNumber::section{background-color::green}

No effect.

The rest of my style sheet works fine. This is the only problem.
Has anyone done this before and knows what works?
Thanks!

::section is not a sub control of QLCDNumber (see docs)
QLCDNumber is a QFrame subclass, so have a look at the StyleSheets reference for QFrame.

Thanks high_flyer - that explains why I couldn't find what I needed in the doc :)