Examine source code of dark scales

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "scales",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-018-0ca3dfc7bb661ec53999d358812ce0ab.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(178, 155, 237, 0.24)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(8, 11, 33)",
      "tab_background_text": "rgb(215, 226, 239)",
      "toolbar_field": "rgba(54, 58, 89, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(205, 35, 185, 0)",
      "popup": "rgba(31, 34, 61, 0.87)",
      "popup_text": "rgb(215, 226, 239)",
      "icons": "rgb(186, 155, 237)",
      "ntp_background": "rgba(31, 34, 61, 0.93)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgba(205, 35, 185, 0)",
      "popup_highlight_text": "rgb(36, 31, 47)",
      "popup_highlight": "rgb(178, 155, 237)",
      "sidebar_border": "rgba(205, 35, 185, 0)",
      "sidebar_highlight_text": "rgb(36, 31, 47)",
      "sidebar_highlight": "rgb(178, 155, 237)",
      "sidebar": "rgb(31, 34, 61)",
      "tab_loading": "rgb(237, 155, 198)",
      "toolbar_bottom_separator": "rgba(31, 34, 61, 0)",
      "toolbar_field_border": "rgba(31, 34, 61, 0)",
      "toolbar_field_highlight": "rgb(243, 132, 190)",
      "toolbar_field_separator": "rgba(31, 34, 61, 0)",
      "toolbar_top_separator": "rgba(31, 34, 61, 0)",
      "toolbar_vertical_separator": "rgba(31, 34, 61, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bed3fb01-479d-4a3c-b60b-2a9aa1ab742c}"
    }
  }
}