Dark and dark dimmed themes are now generally available to all github.com and GitHub Enterprise Cloud users. The updated appearance settings included in this release are designed to give you more control over your theme preferences. Select Single theme or Sync to system to customize the themes that are active during day and night. GitHub will now default to match system preferences when a user is logged out, or when a user is logged in and theme preferences have not yet been set. Manage your theme settings in the "Appearance" tab located in your profile settings.
New GitHub Light Default, GitHub Dark Default and GitHub Dark Dimmed themes matching the official github.com themes are now available in VS Code. To start using the new themes, go to the VS Marketplace, click on the "Install" button, and select one of the themes in VS Code. GitHub's classic VS Code themes GitHub Light and GitHub Dark are still available.
