Examine source code of tranquil wallpaper

{
  "theme": {
    "images": {
      "theme_frame": "tranquilwallpaper2.jpg"
    },
    "colors": {
      "frame": "#b4facd",
      "tab_background_text": "#a1e0f7"
    }
  },
  "version": "2.0",
  "name": "tranquil wallpaper",
  "manifest_version": 2,
  "description": "white candles and white flowers in water"
}