Examine source code of black 22

{
  "theme": {
    "images": {
      "theme_frame": "black22copy.jpg"
    },
    "colors": {
      "frame": "#d6d3d3",
      "tab_background_text": "#d4c9c9"
    }
  },
  "version": "2.0",
  "name": "black 22",
  "manifest_version": 2
}