Christy as a brunette? Should I pull a Cameron Diaz? a Mandy Moore?

So, over the past six months I've been experimenting by adding low lights to my usual highlights. Well, each time I go in to get my hair done, I always ask to go a little darker...just to see. Well I have a hair appointment next week, and I want something different... very different... I don't think I'm ready to do anything crazy with the cut yet... I actually think I'm growing my hair out (again). However, I've got this weird bug.... maybe I should go darker...as in almost brunette... I want to have all over dark low lights, and then a few of my highlights around my face. What do you think? Tell me if you think I should go for it... I thought it would be good for just a few months... I definitely want to go back to my normal blonde by Memorial Day, because during the summer the sun turns me blonde anyways, and if I was dark then, it would just fade it and turn it blonde anyways... so I'd like to go dark until May.... thoughts?

And because I'm a complete computer nerd... I've photoshopped myself with Cameron Diaz's hair, and then with Ashley Simpson's hair..... that's the color I'm thinking..... Well???