Examine source code of watercolor berries

{
  "theme": {
    "images": {
      "theme_frame": "berries_watercolor-top.jpg"
    },
    "colors": {
      "frame": "#163285",
      "tab_background_text": "#f2efef"
    }
  },
  "version": "2.0",
  "name": "watercolor berries",
  "manifest_version": 2,
  "description": "Watercolor image of Arctic berries"
}