Examine source code of Mushrooms in Grass

{
  "theme": {
    "images": {
      "theme_frame": "headershroom.jpg"
    },
    "colors": {
      "frame": "#730073",
      "tab_background_text": "#0a630b"
    }
  },
  "version": "2.0",
  "name": "Mushrooms in Grass",
  "manifest_version": 2,
  "description": "mushroom grass dew chill nature trippy calm peaceful relaxed shroom cap stem magic"
}