Examine source code of Sleeping Kitty

{
  "name": "Sleeping Kitty",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "SleepingKittyH.jpg"
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgba(18, 17, 17, 1)",
      "frame": "rgba(230, 212, 154, 0)",
      "tab_background_text": "rgba(18, 17, 17, 1)",
      "bookmark_text": "rgba(18, 17, 17, 1)"
    }
  }
}