Gridmarket: change the colour of the top bar, but not the menu bar? and move the cart?

I am using Multisite, Gridmarket and MarketPress.

Using the theme options i have changed the colour of the menu bar which I am happy with but it also adds in a colour bar at the top which i would like to stay white. is this possible to do? I know this will effect the text in the bar too, so that will also need to change.

Also I love the cart feature on the top left of the theme, but i would like to move it to the right hand side of the menu/navigation bar. Is this possible? If so how?

I have previously used wordpress and other themes and managed to change and adjust CSS Stylesheets with no issue but I am finding this theme a little more complicated, so a point in the right direction for everything would be appreciated.

Thank you