Stylevars for Widget header background?

[Greeksgal]

I'm wanting to change the colour of the header background on widgets and the forum sidebar. I can't find any option for either in Stylevars. If you look at the attached images, I'm wanting to change the colour of the black header...any ideas?

[Mark.B]

Hi

Please could you post a link to the relevant page, it will make it easier to advise.