Examine source code of Blue Mirror

{
  "name": "1pktwC",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "1pktwC.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(66, 55, 55, 1)",
      "toolbar": "rgba(18, 23, 125, 1)",
      "bookmark_text": "rgba(84, 86, 94, 1)",
      "toolbar_field": "rgba(218, 222, 237, 1)",
      "toolbar_field_text": "rgba(119, 121, 128, 1)",
      "tab_line": "rgba(130, 78, 78, 1)"
    }
  }
}