Examine source code of Dark Blue

{
  "manifest_version": 2,
  "name": "ProtonV2",
  "description": "A theme with a dark color scheme.",
  "version": "1.3",
  "theme": {
    "colors": {
      "tab_background_text": "#bdc1c6",
      "tab_selected": "rgb(66,65,77)",
      "tab_text": "rgb(251,251,254)",
      "icons": "rgb(241,243,244)",
      "frame": "#1c1b22",
      "popup": "rgb(66,65,77)",
      "popup_text": "rgb(251,251,254)",
      "popup_border": "rgb(82,82,94)",
      "popup_highlight": "rgb(43,42,51)",
      "tab_line": "transparent",
      "toolbar": "rgb(43,42,51)",
      "toolbar_top_separator": "transparent",
      "toolbar_bottom_separator": "hsl(240, 5%, 5%)",
      "toolbar_field": "rgb(28,27,34)",
      "toolbar_field_border": "transparent",
      "toolbar_field_text": "rgb(251,251,254)",
      "toolbar_field_focus": "rgb(66,65,77)",
      "toolbar_text": "rgb(241, 243, 244)",
      "ntp_background": "#1c1b22",
      "ntp_text": "rgb(251, 251, 254)",
      "sidebar": "#38383D",
      "sidebar_text": "rgb(249, 249, 250)",
      "sidebar_border": "rgba(255, 255, 255, 0.1)",
      "button": "rgb(43,42,51)",
      "button_hover": "rgb(82,82,94)",
      "button_active": "rgb(91,91,102)",
      "button_primary": "rgb(0, 221, 255)",
      "button_primary_hover": "rgb(128, 235, 255)",
      "button_primary_active": "rgb(170, 242, 255)",
      "button_primary_color": "rgb(43, 42, 51)",
      "checkbox_border_color": "rgb(143, 143, 157)",
      "checkbox_unchecked_background": "rgb(43, 42, 51)",
      "checkbox_unchecked_background_hover": "rgb(82, 82, 94)",
      "checkbox_unchecked_background_active": "rgb(91, 91, 102)",
      "checkbox_checked_background": "rgb(0, 221, 255)",
      "checkbox_checked_color": "rgb(43, 42, 51)",
      "checkbox_checked_background_hover": "rgb(128, 235, 255)",
      "checkbox_checked_background_active": "rgb(170, 242, 255)",
      "error_text_color": "rgb(255, 154, 162)",
      "input_background": "#42414D",
      "input_color": "rgb(251,251,254)",
      "input_border": "#8f8f9d",
      "input_border_error": "rgb(255, 132, 138)",
      "zoom_controls": "rgb(74,74,85)",
      "autocomplete_popup_separator": "rgb(82,82,94)",
      "appmenu_update_icon_color": "#54FFBD",
      "appmenu_warning_icon_color": "#FFBD4F",
      "appmenu_info_icon_color": "#80EBFF",
      "tab_icon_overlay_stroke": "rgb(66,65,77)",
      "tab_icon_overlay_fill": "rgb(251,251,254)"
    }
  }
}