Yes I agree, when I am slightly depressed (when I say slightly I mean not severely to the point of being in the state for months on end). The best way to describe it is mashing up a bunch of really depressing words and combining it with something sad, thats how I explain 'light' depression to people. Deep deep, dark depression has no soul, it has no voice, therefor you just cannot describe how bad it is unless you've experienced it yourself.
I am feeling much better today! It must be the weather that was affecting me yesterday, a nice day outside, did some painting and smoked a cigar - restored happiness within myself