Examine source code of GuildWars2

{
  "theme": {
    "images": {
      "theme_frame": "guildwars2header.png"
    },
    "colors": {
      "frame": "#b8b8b8",
      "tab_background_text": "#2e2d2d"
    }
  },
  "version": "2.0",
  "name": "GuildWars2",
  "manifest_version": 2
}