Examine source code of Shamrock Crystals

{
  "theme": {
    "images": {
      "theme_frame": "ShamrockCrystals.jpg"
    },
    "colors": {
      "frame": "#30f708",
      "tab_background_text": "#0b521e"
    }
  },
  "version": "2.0",
  "name": "Shamrock Crystals",
  "manifest_version": 2,
  "description": "Shamrocks dotted across the screen with giant green and blue crystals."
}