Examine source code of Those Green Apples

{
  "theme": {
    "images": {
      "theme_frame": "Optimized-grnapples.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Those Green Apples",
  "manifest_version": 2,
  "description": "Our apple tree using a multi-image filter for special effects. Check our store for gently used camera filters at great prices. All in excellent working condition."
}