Examine source code of First Capital Connect

{
  "theme": {
    "images": {
      "theme_frame": "Header.jpg"
    },
    "colors": {
      "frame": "#bababa",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "First Capital Connect",
  "manifest_version": 2,
  "description": "A persona created in style of the UK Train Operating Company First Capital Connect who took over from Thameslink."
}