Examine source code of bumble bees in action

{
  "theme": {
    "images": {
      "theme_frame": "bumblebeeheader.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#f7f2f2"
    }
  },
  "version": "2.0",
  "name": "bumble bees in action",
  "manifest_version": 2,
  "description": "Bumble-bee are fascinating insects.\nI like to have them on my screen :-)."
}