Didn't see it mentioned before, so I'll put it here:

Is it possible to have things you post in chat to have a different colour than white?

I sometimes can't follow chat because I often need to look at my fingers while typing, when I'm between my Parkinson med. sets.
Because that influence my fine motor skills that effects my finger/fiping, creating my 'Fat Finger syndrome"

It would be nice to have an optical difference between things I say and others, helps a lot in finding my last chat faster.
and follow things in chat faster

Also the green on black names, are often difficult to read for me, I know that is my problem, but would be nice to change that colour to.
It would be nice if you possibly can make your own colour scheme so you change colour to your liking/readability.

Would make chat more accessible also for the Visually Impaired

Just thinking out loud here