I love them! <3 I've had my hair purple, red and blue, and have candyfloss pink hair dye in my bathroom waiting for me. My last girlfriend had their hair red, pink and purple (though my current boyfriend refuses to dye his hair). The picture is really pretty, I say go for it.
No i love them actually. I think it makes a person more attractive (and it certainly makes them stand out more), but only i its highlights. I don't like it when someone's whole head is an unnatural color. So i like the hair in the picture, but if it was ALL pink, i wouldn't like it.
The only exception is grey hair. I saw a post about it, and i actually really like the style. That one you can get away with the whole head of unattural color.