Examine source code of Nordic Happy

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Nordic Happy",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(225, 234, 239)",
      "toolbar_text": "rgb(248, 112, 140)",
      "frame": "rgb(208, 135, 112)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(46, 52, 64)",
      "tab_line": "rgb(248, 112, 140)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(46, 52, 64)",
      "tab_loading": "rgb(248, 112, 140)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{63c69cc5-deec-4f2c-bc4e-3b9a26272967}"
    }
  }
}