Examine source code of Princess Peach's Castle

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#8bd3f0",
      "tab_background_text": "#4d0054"
    }
  },
  "version": "2.0",
  "name": "Princess Peach's Castle",
  "manifest_version": 2,
  "description": "Princess Peach from the Mario franchise.\n\nPeachy's got it!"
}