Not sure if you want to go somewhat conservative with the colors, but that's what we did, and we are very happy with ours. We get lots of compliments.
I'm not sure if Malibu has changed their colors up at all since 2005, but I believe mine are as follows.
Exterior: Sangria and Marble
Interior: I believe the base is Platinum, but the color looks a little tanish on the website, could be Moonbeam. The rest of the colors are Sangria, and Light Graphite.
Good luck and have a great time with it.