One of the things that always makes me feel a little more put together is nail polish.  Even if I've had a crazy morning and haven't taken a shower yet, having my nails painted makes me feel better.  My favorite 3 polish colors are white, black, and pale pink.  I am currently wearing black, and I wanted to show that it CAN look good outside of Halloween, (at least in my humble opinion.)  It's clean and classic and just looks high fashion to me.  You really can't go wrong with black.  Give it a try and let me know how you're liking it!