Admin Forum:How to add color to infoboxes?

Hopefully I'm doing this right. I haven't asked a question yet, but there is plenty I need help with.

I am the only active admin at the Mountain Dew Wiki, and one of the few active members in general. I've recently started adding infoboxes the pages regarding the many flavors of Mountain Dew, and I was hoping there was a way I can change the color of the infobox to match that of the flavor. Here is an example of a flavor page with an infobox.

Is there anyway you could show me on here? That way I could easily do in the future. Trainmaster718 07:37, December 5, 2011 (UTC)