
...green is jealous
and blue is DEPRESSED.
The Big Bang Theory Season 4, Episode 22

Blue, as in DEPRESSED.
The Big Bang Theory Season 4, Episode 22

Has he been DEPRESSED?
Breaking Bad Season 2, Episode 2

...because I'm fun,
I'm not clinically DEPRESSED at all.
The Big Bang Theory Season 6, Episode 5

Are you DEPRESSED because you're
alone and no one loves you?
The Big Bang Theory Season 4, Episode 5