Examine source code of the dark art master

{
  "theme": {
    "images": {
      "theme_frame": "Untitled-1j.JPEG"
    },
    "colors": {
      "frame": "#b1bab7",
      "tab_background_text": "#736d6d"
    }
  },
  "version": "2.0",
  "name": "the dark art master",
  "manifest_version": 2,
  "description": "a cool darky gloomy persona"
}