Examine source code of jurney

{
  "name": "jurney ",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "balvairdcastle-1643715138293-5506.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4396a30e-ce7d-45b9-ac13-74c0d7142248}"
    }
  }
}