Examine source code of Liquid Bubbles

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#8aaaad",
      "tab_background_text": "#a808c4"
    }
  },
  "version": "2.0",
  "name": "Liquid Bubbles",
  "manifest_version": 2,
  "description": "Bubbles floating in a liquid blue background"
}