Examine source code of Popping Eyeballs

{
  "theme": {
    "images": {
      "theme_frame": "BloodSpatterEyeballsinHands.jpg"
    },
    "colors": {
      "frame": "#9ef77b",
      "tab_background_text": "#70fc5b"
    }
  },
  "version": "2.0",
  "name": "Popping Eyeballs",
  "manifest_version": 2,
  "description": "Eyeballs are popping and some strange characters are chasing them.  See if they make it through Halloween!"
}