Change header BG colour

Hi there,

Would anyone be able to advise me how to change the BG header colour on Unite theme?

http://mellxx.byethost5.com/blog/

(The colour of the area behind the logo, whole area above the menu bar).

I know by default it’s the same as the background colour, managed to do it on the Travelify theme but can’t work it out on this!

Reards,
Joseph