Warning Colors

Hi Shane
I just wanted to say your Theme is really good. It was easy to install and configure on the older Nagios. I just have one small question.
On the “Service Problems” page; How can I change the Background color of the WARNING? The WARNINGS are Yellow with White Text 😀 which makes it a bit hard to read.. Which .css file do I need to edit in order to change the BackGround?

Thanks In Advance..
Shawn