Examine source code of confuse

{
  "name": "confuse",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "77788999999.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(255, 107, 102, 1)",
      "toolbar": "rgba(219, 219, 219, 0.86)",
      "bookmark_text": "rgba(61, 61, 61, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.8)",
      "toolbar_field_text": "rgba(46, 46, 46, 1)",
      "tab_line": "rgba(0, 0, 0, 0.12)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b02c0f4c-510d-480b-88bf-8fe099848313}"
    }
  }
}