A colour theme should be easy to read and simple for users to adopt. Colours should make important syntaxes "pop-out" and make difficult text easier to read.

1. Build the theme extension from the source code and install.
2. Open the Command Palette with Ctrl+Shift+P or ⇧+⌘+P
3. Select Preferences: Color Theme and choose one of theme variants.

You want to contribute? Great! But, please read the contribution guide first.