From the source
For almost as long as Replit has been around, people in the community have been asking for a way to create and share their very own Custom Themes!
Well now you can.
With Custom Themes, you can truly make Replit yours by styling everything from the app's colors, both in the IDE and across the site, to the syntax highlighting in your code.
Create To get started, simply visit the themes section under your account page and hit "Create Theme".
From there, give your new theme a title, add a description, and select a color scheme (light or dark).
Once your theme is created, you'll be dropped into the Themes Editor.
In the Themes Editor, you can change the global tokens, which include the background, foreground, primary, and outline colors that you'll see throughout the entire site.
Just below that is the syntax higlighting editor where you can configure how various tokens appear in your code.
These will apply in the IDE as well as everywhere else you might see a code editor.
…
