I'm baffled yet again...

About a month ago, I had bleach-blonde hair. No, it wasn't platinum, per se, but it was pretty light, especially on me, since I have a darker complexion (YAY florida!). Anyway, I decided that I really needed to go back to my natural color, which is basically dark brown/almost black. This I did, and ONLY NOW, have people noticed it. Seriously, a freaking month later, people left and right suddenly stop me and say, "You know, you seem to have done something different with your hair... I can't put my finger on it though..." Well, gee, you MORONS! I went from blonde to almost black! How hard is that to really notice anyway??