Examine source code of Endless nights

{
  "theme": {
    "images": {
      "theme_frame": "Firefox-banner-design.jpg"
    },
    "colors": {
      "frame": "#ff5100",
      "tab_background_text": "#6130a6"
    }
  },
  "version": "2.0",
  "name": "Endless nights",
  "manifest_version": 2,
  "description": "My own characters, the title I just came up with on the fly.  Wanted to have some fun with my artwork."
}