Examine source code of My Easter Cat

{
  "theme": {
    "images": {
      "theme_frame": "LissiOsternHeader.jpg"
    },
    "colors": {
      "frame": "#9ec46c",
      "tab_background_text": "#b3094a"
    }
  },
  "version": "2.0",
  "name": "My Easter Cat",
  "manifest_version": 2,
  "description": "My Easter Cat, Easter Eggs, Easter Lamb, Easter Flowers"
}