<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=329059) </details> <!--IssueSummary end--> ### Summary Beta dark theme doesn't have default dark syntax highlighting. It's not a big deal if you use it yourself. But if you set dark theme as a default theme, all code in public repos for guests will be with white background. ### Steps to reproduce Set dark theme as a default theme, open any public code as guest. ### What is the current *bug* behavior? If you set dark theme as a default theme, default syntax highlighting still be white. ### What is the expected *correct* behavior? If you set dark theme as a default theme, default syntax highlighting should be dark. OR We should have an option, f.e in gitlab.rb for changing default syntax highlighting, like we have it for theme. ### Relevant logs and/or screenshots