I am LOVING the pastel hair-colour trend lately. I love how the colours are unnatural (blue, pink, etc.) but they're so soft that it's not so in-your-face. Here are some of my favourite shades.
And especially LAVENDER:
I would TOTALLY dye my hair lavender, or at least the tips or something, if I were allowed coloured hair at work. This is why I need a freelance job where I can work from home/where ever. :P