Orange Side Theory
It's Joan
I believe it's going to be Rage/wrath/anger/ect.
Because in SvS Redux, when Thomas gets back from the wedding, he is FURIOUS. And Patton is visibly shocked to see this side of him. Not to mention- we have never seen Thomas mad, before. Especially character!Thomas, and especially not towards his friends. He's always depicted as calm, playful, understanding, kind, relaxed, childish.
When he gave up something he desperately wanted and he feels his life falling apart, then he does something that makes him nice, yet miserable, he's lashed out.
Thomas' mental health is dwindling, which is brought up more specifically in DWIT and FWSA. A very very very common symptom of someone dealing with poor mental health, is irritability. It's commonly caused by the lack of sleep one gets and how they're feeling tired a lot.
So, it would make sense that if they're depicting Character!Thomas as having with mental health, and they try to do things accurately, then showing mildly irrational anger might make sense.
Note: This is not to say that Thomas' anger in the Redux was irrational. He was justified in his feelings, as all people are. He gave up something big to be a supportive friend and he barley even got to do that. His frustration is okay.
But! If I'm right, then anger is a dark side, which means Thomas has an issues with it. All of the Darksides have a theme of over compensating to the point where it's an issue and does more harm than good. This is partly due to THOMAS' tendancey to suppress the traits he deams as "bad." This suppresion leads to them building up energy, turn eventual bursting with the pressure and becoming an issue.
That's part of why suppressing emotions is bad- it doesn't fix anything, it just makes the emotions worse and worse until you have no choice but to deal with all of that at once (i.e. mental break downs)
Just learn about pressure in science, it's the same idea.
Thomas clearly doesn't like anger, because he tries his best to be calm and understanding, further seen by Patton being uncomfortable when Thomas lashes out, proving anger to be a problem.
These are some reasons why I believe Orange is anger- I'll put how I think he'll contribute to the series in another post
Part 2

















