A few BP Social Questions

I'm really liking the Social theme, but I have a few questions.

Is there a way to change the link colours for the pages without having to use the same colours for the admin bar at the top? I'm going for a green feel to the whole thing, but the links don't look right at the top.

How do I add the images to the gallery slider on the home page? I've created a custom field called 'thumbs' and put in the URL of the file, but it doesn't show in the slider.

What is the actual size of the slider? I'd like to be able to fit the images in properly (once it is working).

You can see the site at http://www.glastonbury.ws

Thanks