Examine source code of nevershout

{
  "theme": {
    "images": {
      "theme_frame": "sad.jpg"
    },
    "colors": {
      "frame": "#ede6e6",
      "tab_background_text": "#e60707"
    }
  },
  "version": "2.0",
  "name": "nevershout",
  "manifest_version": 2,
  "description": "Chris drew my love!"
}