Examine source code of omoshiroki

{
  "theme": {
    "images": {
      "theme_frame": "omoshiroki_koto_4.jpg"
    },
    "colors": {
      "frame": "#877d7d",
      "tab_background_text": "#1c1818"
    }
  },
  "version": "2.0",
  "name": "omoshiroki",
  "manifest_version": 2,
  "description": "omoshiroki_koto"
}