Examine source code of Summer tulips

{
  "theme": {
    "images": {
      "theme_frame": "Picture1.jpg"
    },
    "colors": {
      "frame": "#ffed21",
      "tab_background_text": "#ffd12b"
    }
  },
  "version": "2.0",
  "name": "Summer tulips",
  "manifest_version": 2,
  "description": "a nice summer touch to your computer"
}