Examine source code of Spring Forest

{
  "manifest_version": 2,
  "name": "Spring Forest - Premium",
  "version": "1.0.0",
  "description": "Lush emerald forest with lavender blooms. Nature's perfect harmony in your browser.",
  "author": "Firefox Premium Themes",
  "theme": {
    "colors": {
      "frame": "#2E7D32",
      "tab_background_text": "#E8F5E9",
      "toolbar": "#43A047",
      "toolbar_text": "#F1F8E9",
      "toolbar_field": "#1B5E20",
      "toolbar_field_text": "#C8E6C9",
      "toolbar_field_border": "#66BB6A",
      "toolbar_field_focus": "#2E7D32",
      "tab_line": "#9C27B0",
      "tab_selected": "#1B5E20",
      "popup": "#2E7D32",
      "popup_text": "#E8F5E9",
      "popup_border": "#66BB6A",
      "sidebar": "#2E7D32",
      "sidebar_text": "#E8F5E9",
      "sidebar_border": "#43A047",
      "button_background_hover": "#4CAF50",
      "button_background_active": "#66BB6A"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "spring-forest-premium@firefox-themes.io",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}