Examine source code of NickelBack

{
  "theme": {
    "images": {
      "theme_frame": "Nickelback.jpg"
    },
    "colors": {
      "frame": "#0000ff",
      "tab_background_text": "#0000ff"
    }
  },
  "version": "2.0",
  "name": "NickelBack",
  "manifest_version": 2,
  "description": "A Nickelback Persona made by me"
}