Examine source code of Derpy guy

{
  "theme": {
    "images": {
      "theme_frame": "derpy.jpg"
    },
    "colors": {
      "frame": "#878787",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Derpy guy",
  "manifest_version": 2,
  "description": "A character for a game I'm making. Tried to set it up as a custom persona but it wouldn't stay, so I'm trying this.\n\nI guess, if you like it.. enjoy!"
}