Small Customizations

I’d like a little help with styling a couple items. Some of my product images were gifs & the background is black. I’d like to be able to change it to white, if possible. Also, I’d to make the product title bigger & more obvious that it is a link on the products page list. Here’s a link to a little screenshot to see exactly what I mean — http://aosi.1stteamweb.com/wp-content/uploads/2013/10/aosi_ss.jpg

http://wordpress.org/plugins/wp-e-commerce/