Menu is blank although its still there

Hi

I'm working on this site (http://amirah.becreativ.co.uk/home-2/) and have gone through the theme options etc to change the colour of the menu but it's not showing me anything - assumingly because the rev slider is covering it but I can't seem to work out how to drop that slider down?

I've granted support access if thats needed.

Thanks
Farzan