Examine source code of Broncos Theme

{
  "theme": {
    "images": {
      "theme_frame": "DENVER_BRONCOS_HEADER.jpg"
    },
    "colors": {
      "frame": "#99f00e",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Broncos Theme",
  "manifest_version": 2,
  "description": "Denver Broncos"
}