Examine source code of BAR in sunset

{
  "theme": {
    "images": {
      "theme_frame": "gornja.jpg"
    },
    "colors": {
      "frame": "#ed652b",
      "tab_background_text": "#ed652b"
    }
  },
  "version": "2.0",
  "name": "BAR in sunset",
  "manifest_version": 2,
  "description": "bla bla bla"
}