Examine source code of Dark Lollipop

{
  "name": "Dark Lollipop",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "firefoxthemeheaderv2.png"
    },
    "colors": {
      "frame": "rgba(53, 37, 86, 1)",
      "tab_background_text": "rgba(193, 124, 230, 1)",
      "toolbar": "rgba(100, 74, 150, 1)",
      "bookmark_text": "rgba(226, 201, 241, 1)",
      "toolbar_field": "rgba(255, 97, 194, 1)",
      "toolbar_field_text": "rgba(255, 168, 239, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b58876f6-351e-4112-9846-69bb73e94ec2}"
    }
  }
}