Examine source code of The Gray Blue

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "The Gray Blue",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(91, 142, 170)",
      "toolbar_text": "rgb(13, 14, 15)",
      "frame": "rgb(140, 163, 179)",
      "tab_background_text": "rgb(28, 31, 34)",
      "toolbar_field": "rgb(179, 207, 226)",
      "toolbar_field_text": "rgb(9, 9, 9)",
      "tab_line": "rgb(12, 14, 15)",
      "popup": "rgb(178, 205, 223)",
      "popup_text": "rgb(12, 12, 13)",
      "ntp_background": "rgb(99, 160, 194)",
      "popup_border": "rgb(25, 28, 30)",
      "tab_loading": "rgb(12, 14, 15)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4e1da3c7-61a1-4a75-b3de-4e8c7f6fca2a}"
    }
  }
}