Because it's fun

It's been over a year and a half since I colored my hair. I wanted to see how long I could go without coloring it (and I wanted to see what my natural color really was!). I've liked my natural color, but for some reason, whether it's hormones or the sun that's so kindly decided to grace us with it's presence, the color is becoming a little dull. While I know that coloring my hair will require more upkeep, I really want something new that might help brighten my often tired appearance (and I'm not looking for a new cut).

So here's the question...

do I go light?

or dark?

...or something totally different?

Please chime in!