CSS/HTML Changes to Magento Site

I have a development site in Magento and I am looking for someone to make some very small changes 1 - Extend the top nav bar on homepage 2 - "Round" the corners of the top nav bar 3 - Insert a dark blue background at the bottom of the homepage and every page. I have images to help explain. This is only a small job but there will be more work for a good developer.