Examine source code of Save Earth

{
  "name": "Save Earth",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "—Pngtree—green earth day hands hold_44024472.png"
    },
    "colors": {
      "frame": "rgba(120, 181, 95, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(231, 248, 191, 0.5)",
      "bookmark_text": "rgba(0, 86, 255, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.8)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 86, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{aa36bff6-f82f-4f00-ac08-be5342d87da8}"
    }
  }
}