Examine source code of Pulled Lights in the Dark

{
  "theme": {
    "images": {
      "theme_frame": "shot-in-the-dark-top.jpg"
    },
    "colors": {
      "frame": "#ffa303",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Pulled Lights in the Dark",
  "manifest_version": 2,
  "description": "Interesting design from opening the shutters for a while in the dark."
}