Centre Feature Content Text – Catch Everest FREE Theme

Hi guys, I'd now like to do the following on this site: http://tinyurl.com/zolwosq 1) Center the text under my featured content images on the home page 2) Change the color of the "Catch Themes" text-link in the footer, including the hover color, (when I recently changed the font color to yellow it didn't change this bit of the text), color - #f8d342 3) Is it possible to add a customized sign-up box to the widget area in the footer? I'm assuming not on this theme but wanted to check. Many thanks Angela