Examine source code of nevermore18

{
  "theme": {
    "images": {
      "theme_frame": "Cpiadeceiling_dark.jpg"
    },
    "colors": {
      "frame": "#080101",
      "tab_background_text": "#080101"
    }
  },
  "version": "2.0",
  "name": "nevermore18",
  "manifest_version": 2
}