openmct/platform/commonUI/themes/espresso/bundle.json

{
    "name": "Espresso",
    "description": "Espresso theme: dark and rich",
    "extensions": {
        "stylesheets": [
            {
                "stylesheetUrl": "css/theme-espresso.css",
                "priority": 1000
            }
        ],
        "constants": [
            {
                "key": "THEME",
                "value": "espresso"
            }
        ]
    }
}