No way to customize theme visibly present in app

[drewwiskus]

Is your feature request related to a problem? Please describe.
The two themes available aren't personally pleasant and I'd like an easy way to update them

Describe the solution you'd like
A Theme tab in the settings would be best, or at minimum a link to a .json where I could input colors

Describe alternatives you've considered
otherwise I'll have to fork, build my own and edit the colors? Unless there is an easier way

[kmcb777]

We use CodeMirror editor. I guess we could offer the possibility to choose other codemirror themes, but it would only change the editor's colors, not the menus. We'd just need to include the matching css files, which are about 5kb each.