Examine source code of Purple Stuff

{
  "theme": {
    "images": {
      "theme_frame": "puurp.jpg"
    },
    "colors": {
      "frame": "#26ff00",
      "tab_background_text": "#7d00b3"
    }
  },
  "version": "2.0",
  "name": "Purple Stuff",
  "manifest_version": 2,
  "description": "things that are purple"
}