Examine source code of Anthrazit

{
  "theme": {
    "images": {
      "theme_frame": "anthrazit_oben.jpg"
    },
    "colors": {
      "frame": "#6b6b6b",
      "tab_background_text": "#f0f0f0"
    }
  },
  "version": "2.0",
  "name": "Anthrazit",
  "manifest_version": 2
}