Examine source code of Tarot

{
  "name": "Tarot",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "tarot_cropped_drawn.png"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 211, 163, 1)",
      "toolbar": "rgba(122, 0, 120, 1)",
      "bookmark_text": "rgba(255, 232, 25, 1)",
      "toolbar_field": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(189, 4, 170, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{337964dd-6c1f-47a0-a1f4-36f00131f6c5}"
    }
  }
}