Examine source code of iannlSilk

{
  "name": "iannlSilk",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "iannl silk bg.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(133, 62, 0, 1)",
      "toolbar": "rgba(221, 0, 255, 0.27)",
      "bookmark_text": "rgba(133, 62, 0, 1)",
      "toolbar_field": "rgba(255, 145, 145, 0.49)",
      "toolbar_field_text": "rgba(135, 68, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{04493fcb-186d-4a1b-8d35-5080f52dd469}"
    }
  }
}