How can I change the backgroud colour of Homepage Headline Text?

Hi there, First, thanks for creating this excellent theme for us. I love it . Just 3 quick questions about this theme: 1. as above: how can I change the backgroud colour of Homepage Headline Text and subheadline Headline? 2. How to disable the content showing up on my homepage photo? I use post as homepage photos. And I don't want people see the content of those posts before clicking in. 3. How can I change the colour of "<>" on the homepage photo? which uses to control the slide page. How to change the background colour? My page : www.aaie.com.au. Thanks Mate