Someone gave me a code a while back that they created for when I wanted to cover the current Maleria art up with another version. The code is below:

.five.column.wide img[src="http://img.subeta.net/maleira.gif"] { padding-top: 300px; width: 293px; height: 0px; background-clip: padding; background-image: url("http://oi57.tinypic.com/slu45d.jpg"); overflow: hidden;}

Will this same code work for Melody, or will I need something different?

It should, just replace the urls with Melody's