Examine source code of OFFI_01

{
  "theme": {
    "images": {
      "theme_frame": "ff_skin.png"
    },
    "colors": {
      "frame": "#961b1e",
      "tab_background_text": "#cfd5d1"
    }
  },
  "version": "2.0",
  "name": "OFFI_01",
  "manifest_version": 2,
  "description": "M I N"
}