Examine source code of Bubblegum

{
  "theme": {
    "images": {
      "theme_frame": "bubblegum-header.jpg"
    },
    "colors": {
      "frame": "#fff0a3",
      "tab_background_text": "#eb4c54"
    }
  },
  "version": "2.0",
  "name": "Bubblegum",
  "manifest_version": 2,
  "description": "summer bubblegum"
}