Examine source code of Maplestory Theme

{
  "theme": {
    "images": {
      "theme_frame": "mozillaheader-good-Copy-Copy.png"
    },
    "colors": {
      "frame": "#fcfcfc",
      "tab_background_text": "#294885"
    }
  },
  "version": "2.0",
  "name": "Maplestory Theme",
  "manifest_version": 2,
  "description": "Maplestory's rollbacks made me quit and make this cool persona...It might not be the exact same size for every computer screen, but whatever."
}