Mine switches around, but I think the most general difference is "feeling well" me, and more depressed me.
If I'm feeling well I'll try a little more and do more stuff like dresses sometimes, prints and flowers, more colors, more accessories, and my style actually shows myself more. If I'm not feeling well I sort of give up a bit, shy away from anything different or unique, and get boring.
I also mess with my hair a lot, especially when I need change. A while back I dyed it all blue for a couple months. I recently cut it short out of a feeling of needing change, and I was too impulsive and sorta regret it, but I'm getting a little more used to it and happier with it now.

I love your hair, very pretty color!