Examine source code of oldpc

{
  "name": "oldpc",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "nostromo.jpeg"
    },
    "colors": {
      "frame": "rgba(142, 145, 127, 1)",
      "tab_background_text": "rgba(77, 77, 77, 1)",
      "toolbar": "rgba(255, 255, 255, 0.58)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9edbb890-c822-4277-9b78-2afe92977800}"
    }
  }
}