Updates are available right on your WordPress dashboard. You just have to click on the update button and sit back.
To make a contact page, all you have to do is make a new page and set its template to « Contact Us ». You can insert a shortcode generated through any form plugin (Contact Form 7 recommended).
You can go to « Orane Theme » page and click on Styling Options, here you will find all the color combination used in the theme, and allows you to edit them too.