Change Cart/Checkout Button and Background colour

I’m really struggling to do something which should be really simple (I’d hope!!)
Using eSell Pro theme with woocommerce, all is well but I cannot change the button colour on the cart/checkout screens or the table background from bright pink. It really doesn’t work with the colour scheme I need, but the swatches included don’t include these options to change. Can someone fill me in on where and how I can do this?

I’m working on it offline but a screenshot to show what I mean is HERE . Ideally Id like the background border and the tabs to be the same blue colour as the nav bar.

Thanks al

Andy

https://wordpress.org/plugins/woocommerce/