Examine source code of colourful world

{
  "theme": {
    "images": {
      "theme_frame": "colourfulworld.jpg"
    },
    "colors": {
      "frame": "#9742d4",
      "tab_background_text": "#fab905"
    }
  },
  "version": "2.0",
  "name": "colourful world",
  "manifest_version": 2,
  "description": "colourful summer flowers, wonderful world, purple, yellow, magenta, red, meadow, flower bed, spring, joy, beautiful, happiness, happy flowers"
}