Examine source code of Cherry Blossom Premium

{
  "manifest_version": 2,
  "name": "Japanese Cherry Blossom - Premium",
  "version": "1.0.0",
  "description": "Sakura pink with zen tranquility. Traditional beauty, modern elegance.",
  "author": "Firefox Premium Themes",
  "theme": {
    "colors": {
      "frame": "#FFB3C1",
      "tab_background_text": "#4A0E1F",
      "toolbar": "#FFC1CC",
      "toolbar_text": "#4A0E1F",
      "toolbar_field": "#FFD6E0",
      "toolbar_field_text": "#6D1B2E",
      "toolbar_field_border": "#FF8FA3",
      "toolbar_field_focus": "#FFEBF0",
      "tab_line": "#C41E3A",
      "tab_selected": "#FFF0F3",
      "popup": "#FFC1CC",
      "popup_text": "#4A0E1F",
      "popup_border": "#FF8FA3",
      "sidebar": "#FFF5F7",
      "sidebar_text": "#4A0E1F",
      "sidebar_border": "#FFB3C1",
      "button_background_hover": "#FFD6E0",
      "button_background_active": "#FFE0E8"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "japanese-cherry-blossom-premium@firefox-themes.io",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}