A custom Mailspring Theme based on Mailspring Theme Starter.
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├── styles # All stylesheets
| ├── index.less # Main LESS file to import your stylesheets
│ ├── ui-variables.less # UI variables that override N1's defaults
│ ├── theme-colors.less # Theme colors for theme preview (optional)
├── package.json # Metadata about the theme
├── LICENSE.md # License with usage rights
└── README.md # Info about your theme and how to use it