Examine source code of Bluegray Simple elegant

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "bluegraysimple",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(59, 66, 82)",
      "toolbar_text": "rgb(251, 249, 253)",
      "frame": "rgb(59, 66, 82)",
      "tab_background_text": "rgb(177, 172, 149)",
      "toolbar_field": "rgb(59, 66, 82)",
      "toolbar_field_text": "rgb(239, 239, 232)",
      "tab_line": "rgb(59, 66, 82)",
      "popup": "rgb(59, 66, 82)",
      "popup_text": "rgb(215, 210, 191)",
      "button_background_active": "rgb(122, 115, 96)",
      "button_background_hover": "rgb(87, 86, 84)",
      "frame_inactive": "rgb(59, 66, 82)",
      "icons_attention": "rgb(196, 168, 88)",
      "icons": "rgb(254, 254, 248)",
      "ntp_background": "rgb(59, 66, 82)",
      "ntp_text": "rgb(254, 254, 248)",
      "popup_border": "rgb(222, 226, 180)",
      "popup_highlight_text": "rgb(225, 228, 225)",
      "popup_highlight": "rgb(65, 71, 88)",
      "sidebar_border": "rgb(59, 66, 82)",
      "sidebar_highlight_text": "rgb(222, 226, 180)",
      "sidebar_highlight": "rgb(79, 81, 81)",
      "sidebar_text": "rgb(223, 219, 207)",
      "sidebar": "rgb(59, 66, 82)",
      "tab_background_separator": "rgb(59, 66, 82)",
      "tab_selected": "rgba(216, 216, 213, 0.08)",
      "tab_text": "rgb(237, 236, 232)",
      "toolbar_bottom_separator": "rgb(59, 66, 82)",
      "toolbar_field_border_focus": "rgb(59, 66, 82)",
      "toolbar_field_border": "rgb(59, 66, 82)",
      "toolbar_field_focus": "rgb(59, 66, 82)",
      "toolbar_field_highlight_text": "rgb(59, 66, 82)",
      "toolbar_field_highlight": "rgb(226, 230, 230)",
      "toolbar_field_separator": "rgb(212, 207, 185)",
      "toolbar_field_text_focus": "rgb(212, 207, 185)",
      "toolbar_top_separator": "rgb(59, 66, 82)",
      "toolbar_vertical_separator": "rgb(59, 66, 82)",
      "tab_loading": "rgb(59, 66, 82)"
    }
  }
}