Examine source code of Minecraft Red

{
  "theme": {
    "images": {
      "theme_frame": "personaheader.png"
    },
    "colors": {
      "frame": "#d9d9d9",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Minecraft Red",
  "manifest_version": 2,
  "description": "I'm make this actually for personal use only, but then i've changed my mind and shared this.\nEnjoy."
}