Examine source code of Carquinez Bridge

{
  "theme": {
    "images": {
      "theme_frame": "carqueniz_bridge_header.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#f7e703"
    }
  },
  "version": "2.0",
  "name": "Carquinez Bridge",
  "manifest_version": 2,
  "description": "The Carquinez Bridge from Eckly pier."
}