Examine source code of Beach Morning Glory

{
  "theme": {
    "images": {
      "theme_frame": "ipomoea1.jpg"
    },
    "colors": {
      "frame": "#7a7a7a",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Beach Morning Glory",
  "manifest_version": 2,
  "description": "A Morning Glory as seen on a beach near Venice, most likely a Calystegia soldanella.\n\nupdate to fix missing footer since last FireFox Update...."
}