Examine source code of wolf

{
  "name": "wolf",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Untitled design (1).png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(0, 0, 0, 0.24)",
      "toolbar_field": "rgba(0, 0, 0, 0.26)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 0.23)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0d654a1d-50aa-468c-9622-c0a095bc0685}"
    }
  }
}