Examine source code of SunriseSunset

{
  "theme": {
    "images": {
      "theme_frame": "Cropforpersona1.jpg"
    },
    "colors": {
      "frame": "#f5899a",
      "tab_background_text": "#85b6f2"
    }
  },
  "version": "2.0",
  "name": "SunriseSunset",
  "manifest_version": 2,
  "description": "Mt. Baker/Death Valley"
}