Examine source code of cyanish grey

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "cyan",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(88, 115, 116)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(102, 137, 142)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(88, 115, 116)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(88, 115, 116)",
      "popup": "rgb(93, 118, 120)",
      "popup_text": "rgb(249, 249, 249)",
      "button_background_active": "rgba(199, 144, 129, 0.08)",
      "button_background_hover": "rgba(199, 144, 129, 0.16)",
      "frame_inactive": "rgba(199, 144, 129, 0)",
      "icons_attention": "rgb(255, 184, 201)",
      "ntp_background": "rgb(88, 115, 116)",
      "popup_border": "rgb(88, 115, 116)",
      "popup_highlight_text": "rgb(255, 203, 215)",
      "popup_highlight": "rgb(108, 143, 146)",
      "sidebar_border": "rgb(1, 42, 60)",
      "sidebar_highlight": "rgb(88, 115, 116)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(88, 115, 116)",
      "toolbar_bottom_separator": "rgb(89, 116, 117)",
      "toolbar_field_border": "rgba(199, 144, 129, 0)",
      "toolbar_top_separator": "rgba(34, 25, 77, 0)",
      "tab_loading": "rgb(88, 115, 116)"
    }
  }
}