[dr_killer_uk]

This is in reference to the annoying green box that shows up at the top of the website when you add something to cart or do other things (as a normal user browsing and using the site) it says things like "product has been added to your cart" and so on.
Is there any way to change its color from green or to stop it showing up completely? The green box just doesn't go with my site theme at all. Even if i could just change it to white that would be 100% better.

Thanks in advance!