Examine source code of Grell Reaper

{
  "theme": {
    "images": {
      "theme_frame": "GrellHeader.png"
    },
    "colors": {
      "frame": "#4f0000",
      "tab_background_text": "#b50000"
    }
  },
  "version": "2.0",
  "name": "Grell Reaper",
  "manifest_version": 2,
  "description": "Grell Sutcliff from Kuroshitsuji or Black Butler. My favorite gay, flamboyant psycho-path~\n\nThe foot will probably fail again...XD"
}