Let's say I'm writing a program in JavaScript, the colour of numbers is currently a light green (you know what I mean), there should be themes which we should be able to make. This could be a part of the .replit file, such as theme: {}.
We should be able to customise the colour-coding system which replit uses. Would be a great thing to have, as I'm getting a bit bored of the same thing for the last couple of years.
There could also be a separate themes board for people to post new themes.