Examine source code of Cranberry Duckling

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#0f0d0d",
      "tab_background_text": "#ede734"
    }
  },
  "version": "2.0",
  "name": "Cranberry Duckling",
  "manifest_version": 2,
  "description": "I read recipes the same way I read science fiction. I get to the end and say to myself 'well, that's not going to happen.' ~ Comedienne Rita Rudner\n\nTAGS:\n     food, duckling, duck"
}