Examine source code of MoonGlowFun

{
  "theme": {
    "images": {
      "theme_frame": "MoonGlow.jpg"
    },
    "colors": {
      "frame": "#262525",
      "tab_background_text": "#030303"
    }
  },
  "version": "2.0",
  "name": "MoonGlowFun",
  "manifest_version": 2,
  "description": "I was trying out some new moon photoshop brushes.  Just banging away on a work page with all the moon brushes and stars.  Then I looked at what I made.  Wo, this would make a nice persona.  So I put it in my Firefox and it looked great to me.  So here it is for you."
}