Examine source code of BlueLight Fox

{
  "theme": {
    "images": {
      "theme_frame": "bluelightfox.png"
    },
    "colors": {
      "frame": "#033452",
      "tab_background_text": "#afd4fa"
    }
  },
  "version": "2.0",
  "name": "BlueLight Fox",
  "manifest_version": 2,
  "description": "Blue strip with a black and blue checkered background.  Blue Firefox logo in upper left corner"
}