Examine source code of Backside Barrel

{
  "theme": {
    "images": {
      "theme_frame": "rmheader.jpg"
    },
    "colors": {
      "frame": "#0ccaf5",
      "tab_background_text": "#0ccaf5"
    }
  },
  "version": "2.0",
  "name": "Backside Barrel",
  "manifest_version": 2,
  "description": "Backside barrel surfing"
}