Now that I've had every available PCB colour from the usual prototype services I thought that I'd write a short article (http://andybrown.me.uk/wk/2015/01/05/pcb-colours) giving what I consider to be the pros and cons of each one. It's all opinion of course and I've included very high res photographs that have been colour-corrected to help you make an informed choice for yourself.
Feel free to disagree, share your opinions and your own photos.