Few questions about the theme

Hi there, I really love the theme (I’m testing it now and I want to use it in the future), but I have a few questions:

-the sections don’t seem to work
– How can I change the color of the top of the menu?
– Homepage/ catagory pages: there is a grey space on both sides of my blog preview picture. The picture has to be shown full space. Is that possible?
– my reactions on my comments are situated right under the comment, but not gradually. How do I change that?
– I like the related posts section, but when there is just one related post, you see that past 3 times. How do I change that?
– Can I hide meta data like date, category, etc in a single post?
(I really would like to hide the date, but if if can’t: is there an option to add the year? You only see the day/month but that is crazy since a lot of posts are more than a year old. Plus, because of the date, the mobile phone version looks a little bit silly because of the big white empty space on the left side.)
– the search button is under the place where you can type your question. Is it possible to move that to the right side?

Thanks!

The page I need help with: [log in to see the link]