Examine source code of polar cubs

{
  "theme": {
    "images": {
      "theme_frame": "gff.png"
    },
    "colors": {
      "frame": "#2e998b",
      "tab_background_text": "#0de3df"
    }
  },
  "version": "2.0",
  "name": "polar cubs",
  "manifest_version": 2,
  "description": "cute little polar bears"
}