Examine source code of Millay Orange

{
  "theme": {
    "images": {
      "theme_frame": "FFHeader1.jpg"
    },
    "colors": {
      "frame": "#b8eb2c",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Millay Orange",
  "manifest_version": 2,
  "description": "Millay Ashford in orange, being all lovely"
}