Examine source code of Butterfly Menagerie

{
  "theme": {
    "images": {
      "theme_frame": "ButterflyMenagerie.jpg"
    },
    "colors": {
      "frame": "#ab7b7b",
      "tab_background_text": "#ab2424"
    }
  },
  "version": "2.0",
  "name": "Butterfly Menagerie",
  "manifest_version": 2,
  "description": "Butterflies scattered across layers of colors"
}