Examine source code of Pussy Cat

{
  "theme": {
    "images": {
      "theme_frame": "pussycat.jpg"
    },
    "colors": {
      "frame": "#bab6b6",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Pussy Cat",
  "manifest_version": 2,
  "description": "Pussy cat , pussy cat where have you been?\nI've been to London to visit the queen.\nPussy cat, pussy cat, what did you there?\nI frightened a little mouse under the chair."
}