Examine source code of Japanese Flower Pattern

{
  "theme": {
    "images": {
      "theme_frame": "jflower_header.jpg"
    },
    "colors": {
      "frame": "#ffc5d8",
      "tab_background_text": "#6300c9"
    }
  },
  "version": "2.0",
  "name": "Japanese Flower Pattern",
  "manifest_version": 2,
  "description": "Give a Zen feeling to Firefox with flowers, to encourage quiet contemplation."
}