Can you henna in funky colors?

Hey yall, I was just wondering would it be possible to henna my hair a deep purple shade. Now before you think I've lost my marbles, I'm just talking about a simple streak in the front of my hair for some fun. I'm really drawn to the strengthening and conditioning effects of Henna, but I'm not sold on the versatility of it.
It doesn't seem I'd be able to highlight, or multidimensionalize my hair in any way. I'm just 17, I wanna be able to have fun with my hair and ammonia-based/salon-grade dye is likely to have bad reactions if I already have the Henna in. Both are irreversible so I was just wondering if anyones pushed the envelope a bit with their hennaing. Thanx.