URGENT… please help.

I have tried to change the width of the site and tried to add color to the main menu (primary menu) but nothing works. I want to make the main menu on top a dark blue with white text inside. And I want to narrow the site so that there is more color on both sides. I also want to color the footer red with white text inside. www.luishernandezgraphics.com I am frustrated and I am thinking about getting a refund. It's not what I expected... how can you offer a theme that doesn't allow you to do such basic things, such as changing the width or color of the menu? I was impressed by your themes and used them for years but am rather dissapointed this time around. Someone, please assist me. Thank you. Much obliged.