I would suggest making all of your customizations via custom CSS from the custom.css of your Child theme. I wouldn’t mess around with trying to add your own options. That will add a new level of complexity that I wouldn’t really imagine is necessary unless you are purposely setting up options a client can change for some reason.
But unfortunately these are CSS customizations you’ll need to make to the theme and are not included with support.
It is honestly difficult to give a you direct answer as to your question because every section has different HTML markup and CSS. Also how you’ve setup your theme options will effect what CSS effect what, as well.
For CSS changes, it’s a good idea to use a tool like firebug or Google Chrome’s built-in developer tools to locate them and then put the edits either in your child theme or in the “Custom CSS” option on your theme options page.
Also, here’s a helpful tutorial on how to use Firebug – http://vimeo.com/20917974. The only thing I’d suggest not doing is actually making edits to the theme’s CSS files, as it shows at the end of that video. However, the video serves as a good introduction to Firebug and how it can be used to find what CSS is effecting certain areas of your site without ever digging around in any files.