Examine source code of Hanging Frog

{
  "name": "Hanging Frog",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "Frog.jpg"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(163, 163, 163, 1)",
      "toolbar": "rgba(77, 77, 77, 0.32)",
      "bookmark_text": "rgba(214, 214, 214, 1)",
      "toolbar_field": "rgba(102, 102, 102, 0.4)",
      "toolbar_field_text": "rgba(224, 224, 224, 1)"
    }
  }
}