Examine source code of GreatRaceNutrition.com

{
  "theme": {
    "images": {
      "theme_frame": "FirefoxPersonaHeader.jpg"
    },
    "colors": {
      "frame": "#00a2ff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "GreatRaceNutrition.com",
  "manifest_version": 2,
  "description": "Endurance Nutrition for Marathoners, Runners, Triathletes, Ultra Runners, Cyclists, Swimmers and all endurance athletes."
}