Examine source code of Microsoft Office - Dark Gray

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Microsoft Office - Dark Gray",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(190, 187, 184)",
      "toolbar_text": "rgb(17, 16, 15)",
      "frame": "rgb(68, 68, 68)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(102, 102, 102)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(32, 31, 30, 0)",
      "popup": "rgb(243, 242, 241)",
      "popup_text": "rgb(37, 36, 35)",
      "button_background_active": "rgb(151, 149, 147)",
      "button_background_hover": "rgb(200, 198, 196)",
      "ntp_background": "rgb(102, 102, 102)",
      "ntp_text": "rgb(243, 242, 241)",
      "sidebar_border": "rgb(68, 68, 68)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(102, 102, 102)",
      "tab_text": "rgb(37, 36, 35)",
      "toolbar_field_border_focus": "rgb(128, 128, 128)",
      "toolbar_field_border": "rgb(128, 128, 128)",
      "toolbar_field_focus": "rgb(243, 242, 241)",
      "toolbar_field_text_focus": "rgb(37, 36, 35)",
      "toolbar_top_separator": "rgba(243, 242, 241, 0)",
      "tab_loading": "rgba(32, 31, 30, 0)"
    }
  }
}