virtmart 2

[Topknotch]

Hiya
Ok Ok this is probs a newbie question but I have searched thorougly and cannot find the solution so here goes ..

Im running joomla 1.5.25 I have installed virtumart 2 and firstlly I need to know how to change the background colour of the add to cart image as at the mo its green and want it to fit better into the template.

Secondly how i change the thumb nail images to larger , example can be found her - www.evohottubs.co.uk
As you will see the the thumbs are small and products all crammed together so needs to be spaced out abit .
Sorry for being a newbie but any help be great
Thanks in advance