Examine source code of Fractulated Firefox

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#cfcfcf",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Fractulated Firefox",
  "manifest_version": 2,
  "description": "Was looking for a standard cool looking black persona, couldn't find one so I made this one, and uploaded it here thanks to popular demand."
}