Examine source code of Rudolph Technologies

{
  "theme": {
    "images": {
      "theme_frame": "rudolph_mozilla.png"
    },
    "colors": {
      "frame": "#cccccc",
      "tab_background_text": "#006699"
    }
  },
  "version": "2.0",
  "name": "Rudolph Technologies",
  "manifest_version": 2,
  "description": "For Rudolph employees"
}