Examine source code of Brown Updated Version

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Brown",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-006-51ab495c5f5dde6a3cddb22484acd00d.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(74, 42, 17)",
      "toolbar_text": "rgb(165, 111, 89)",
      "frame": "rgb(157, 108, 59)",
      "tab_background_text": "rgb(79, 32, 16)",
      "toolbar_field": "rgb(200, 161, 130)",
      "toolbar_field_text": "rgb(120, 77, 49)",
      "tab_line": "rgb(140, 89, 87)",
      "popup": "rgb(180, 125, 71)",
      "popup_text": "rgb(78, 40, 12)",
      "button_background_active": "rgb(199, 141, 96)",
      "icons_attention": "rgb(245, 122, 14)",
      "icons": "rgb(218, 176, 145)",
      "ntp_background": "rgb(207, 156, 94)",
      "ntp_text": "rgb(96, 57, 25)",
      "popup_border": "rgb(97, 66, 38)",
      "popup_highlight_text": "rgb(78, 56, 35)",
      "popup_highlight": "rgb(208, 186, 166)",
      "sidebar_border": "rgb(134, 96, 64)",
      "sidebar_highlight_text": "rgb(100, 62, 30)",
      "sidebar_highlight": "rgb(215, 190, 168)",
      "sidebar_text": "rgb(104, 70, 40)",
      "sidebar": "rgb(145, 103, 71)",
      "tab_background_separator": "rgb(87, 40, 24)",
      "tab_loading": "rgb(187, 113, 82)",
      "tab_text": "rgba(192, 153, 128, 0.84)",
      "toolbar_bottom_separator": "rgb(79, 32, 16)",
      "toolbar_field_border_focus": "rgb(79, 32, 16)",
      "toolbar_field_border": "rgb(79, 32, 16)",
      "toolbar_field_focus": "rgb(134, 96, 64)",
      "toolbar_field_highlight_text": "rgb(96, 43, 24)",
      "toolbar_field_highlight": "rgb(211, 182, 154)",
      "toolbar_field_separator": "rgb(79, 32, 16)",
      "toolbar_field_text_focus": "rgb(66, 24, 8)",
      "toolbar_top_separator": "rgb(79, 32, 16)",
      "toolbar_vertical_separator": "rgb(132, 102, 80)"
    }
  }
}