Well here's something fascinating. Turns out people with Our Condition might see the world differently than everyone else.
http://www.cbsnews.com/8301-504763_162-20011326-10391704.html
I hadn't thought of it before, but after reading that article, I can say it rings a bell. When you are in an up mood, don't colors seem a little brighter? A little more vibrant? When you are down, don't things really have a grey tinge?
Turns out there's scientific evidence!
Perhaps the most significant part of this study is that they may work on a way to measure depression objectively. Thats the best news of all.