How do I modify the colour of the menu bars - BuddyPressCorporate Theme

Hi All,
I am using the BuddyPress Corporate Theme as a stand alone single site.
I find that the 12 preset styles just for the menu bar/title bars arent exactly what I need. How can I modify the colour to #000882 to match the main elements of the logo.
In the blurb about the theme it talks about the easy Colour Picker. Unfortunately I find ant reference regarding Easy Colour Picker anywhere?

What would be really great is if i could create a graduated bar that goes from #000882 at the top and slightly lighter shade towards the bottom in a similar fashion to some of the 12 preset examples. (This would be nice but not essential)

Any suggestions warmly received.

Many thanks and kindest regards