Examine source code of Neutrality

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Neutrality",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(13, 10, 11)",
      "toolbar_text": "rgb(243, 239, 245)",
      "frame": "rgb(69, 73, 85)",
      "tab_background_text": "rgb(114, 176, 29)",
      "toolbar_field": "rgb(243, 239, 245)",
      "toolbar_field_text": "rgb(63, 125, 32)",
      "tab_line": "rgb(114, 176, 29)",
      "popup": "rgb(243, 239, 245)",
      "popup_text": "rgb(63, 125, 32)",
      "ntp_background": "rgb(114, 176, 29)",
      "ntp_text": "rgb(243, 239, 245)",
      "popup_border": "rgb(13, 10, 11)",
      "toolbar_field_border": "rgb(114, 176, 29)",
      "toolbar_field_focus": "rgba(69, 73, 85, 0.5)",
      "toolbar_field_highlight": "rgb(63, 125, 32)",
      "tab_loading": "rgb(114, 176, 29)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{254cb863-15be-41fc-b9bd-010b92a0f8e7}"
    }
  }
}