Examine source code of S.H.I.E.L.D

{
  "theme": {
    "images": {
      "theme_frame": "shield.jpg"
    },
    "colors": {
      "frame": "#524f4f",
      "tab_background_text": "#f5f0f0"
    }
  },
  "version": "2.0",
  "name": "S.H.I.E.L.D",
  "manifest_version": 2
}