Examine source code of thesixthaxis

{
  "theme": {
    "images": {
      "theme_frame": "enlargedfirefoxheader.png"
    },
    "colors": {
      "frame": "#6b6b6b",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "thesixthaxis",
  "manifest_version": 2,
  "description": "Firefox theme from theSIXTHAXIS (all rights resevered all images and logos from the sixthaxis and all affiliates remains the property of the respective companys such as microsoft and sony products and images"
}