Examine source code of The Belayers

{
  "theme": {
    "images": {
      "theme_frame": "belayers.png"
    },
    "colors": {
      "frame": "#1956bf",
      "tab_background_text": "#d44444"
    }
  },
  "version": "2.0",
  "name": "The Belayers",
  "manifest_version": 2,
  "description": "The Belayers"
}