Examine source code of Carbon Blue Dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Carbon Blue",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top",
        "center bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_text": "rgb(247, 253, 251)",
      "frame": "rgb(247, 253, 251)",
      "tab_background_text": "rgb(247, 253, 251)",
      "toolbar_field": "rgb(28, 28, 28)",
      "toolbar_field_text": "rgb(247, 253, 251)",
      "tab_line": "rgb(0, 0, 0)",
      "popup": "rgb(28, 28, 31)",
      "popup_text": "rgb(247, 253, 251)",
      "ntp_text": "rgb(247, 253, 251)",
      "popup_border": "rgb(45, 45, 45)",
      "tab_selected": "rgb(21, 29, 54)",
      "toolbar_bottom_separator": "rgb(0, 0, 0)",
      "tab_loading": "rgb(0, 0, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f26239f1-f0a4-4ea1-a41a-2d2f0efa2160}"
    }
  }
}