Examine source code of ToAru

{
  "name": "ToAru",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "sketch1648503802888.png"
    },
    "colors": {
      "frame": "rgba(242, 237, 242, 1)",
      "tab_background_text": "rgba(245, 163, 63, 1)",
      "toolbar": "rgba(0, 0, 0, 0.79)",
      "bookmark_text": "rgba(191, 191, 191, 1)",
      "toolbar_field": "rgba(0, 0, 0, 1)",
      "toolbar_field_text": "rgba(191, 191, 191, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{693d1a1b-30ca-4616-8af4-62945d8e8d0b}"
    }
  }
}