Examine source code of Animated dragonflies 01

{
  "theme": {
    "images": {
      "theme_frame": "animation.png"
    },
    "colors": {
      "frame": "#ff7373",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Animated dragonflies 01",
  "manifest_version": 2,
  "description": "Animated dragonflies flitting over the grass \n●眺めてるだけで心が温かくなる。\n「時間（とき）」を忘れて・・・"
}