Examine source code of Vandal

{
  "name": "Vandal",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "milad-fakurian-r3tAC_Yq1bM-unsplash.jpg"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(173, 173, 173, 1)",
      "toolbar": "rgba(255, 10, 10, 0.24)",
      "bookmark_text": "rgba(173, 173, 173, 1)",
      "toolbar_field": "rgba(0, 0, 0, 1)",
      "toolbar_field_text": "rgba(173, 173, 173, 1)",
      "tab_line": "rgba(209, 7, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c866beae-b5fd-441b-97ae-9c62444c12f1}"
    }
  }
}