XF 1.3 NavBar Bigger Menus

Hi guys

So my site is at squaremill.co.uk

As you can see I have removed the secondary navbar, and now it looks silly. I want to change the font of the menus (so far only the "forums" is there), and also I want it to have vertically centered, so it looks neat.

How can I do this?

Also, could someone tell me how can I change ONLY the background to a different colour (the background which has the XenForo logo on it, the big blue one).

Thanks a lot!