Examine source code of Valkyries Return

{
  "theme": {
    "images": {
      "theme_frame": "Valkrye-Header.jpg"
    },
    "colors": {
      "frame": "#2168b0",
      "tab_background_text": "#2168b0"
    }
  },
  "version": "2.0",
  "name": "Valkyries Return",
  "manifest_version": 2
}