Multiple backgrounds for different Headers?

[arahmitz]

As I was researching different pages built with blowfish I saw lots of pages where people list their portfolio/projects as a list. I then started to wonder - is there a way to dynamically change the background depending on the header we are in?
Let's say I have an article formatted like

Project A

(background 1)

Project B

(background 2)

Project C

(background 3)

It would allow much more flexibility when it comes to creating articles with different backgrounds inside.