Examine source code of Interstate Traffic

{
  "theme": {
    "images": {
      "theme_frame": "PC020988.jpg"
    },
    "colors": {
      "frame": "#4a0000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Interstate Traffic",
  "manifest_version": 2,
  "description": "Driving at night, you see stripes of color from cars. Now, you see them while browsing any time of day!"
}