Add to cart image for virtuemart mart modules

I like to have similar look for the virtuemart product modules that I installed eg Latest Products, Random Products. How do I edit them?

1. My virtuemart is using add-to-cart_hot.png. But the modules are using a generic add to cart button. How do I change the fonts for the prices and the image of the button to "add-to-cart_hot.png?"

2. The background colour of headers of modules are not showing up in internet explorer 9. Any solution?

Regards
Ruth

What of our VM templates you are using? Can we see your link?