Examine source code of zenLast&SecondColoursOfRainbow

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "zenLastColourOfRainbow",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(245, 238, 233)",
      "toolbar_text": "rgb(67, 72, 67)",
      "frame": "rgb(173, 123, 147)",
      "tab_background_text": "rgb(234, 205, 228)",
      "toolbar_field": "rgb(54, 36, 43)",
      "toolbar_field_text": "rgb(211, 159, 201)",
      "tab_line": "rgba(245, 239, 240, 0)",
      "popup": "rgb(200, 171, 180)",
      "popup_text": "rgb(165, 76, 117)",
      "button_background_active": "rgb(255, 255, 255)",
      "button_background_hover": "rgb(206, 162, 183)",
      "frame_inactive": "rgba(203, 210, 205, 0.78)",
      "icons_attention": "rgb(137, 14, 80)",
      "icons": "rgb(124, 87, 92)",
      "ntp_background": "rgb(107, 72, 96)",
      "ntp_text": "rgb(245, 201, 162)",
      "popup_border": "rgba(103, 111, 108, 0.08)",
      "popup_highlight_text": "rgba(240, 147, 59, 0.77)",
      "popup_highlight": "rgb(239, 212, 186)",
      "sidebar_border": "rgba(248, 185, 64, 0)",
      "sidebar_highlight_text": "rgb(64, 71, 62)",
      "sidebar_highlight": "rgb(245, 201, 162)",
      "sidebar_text": "rgb(67, 72, 67)",
      "sidebar": "rgb(216, 203, 196)",
      "tab_background_separator": "rgba(157, 198, 183, 0)",
      "tab_loading": "rgb(215, 224, 227)",
      "tab_selected": "rgb(213, 186, 196)",
      "tab_text": "rgb(68, 67, 72)",
      "toolbar_bottom_separator": "rgba(217, 228, 228, 0)",
      "toolbar_field_border_focus": "rgb(61, 90, 61)",
      "toolbar_field_border": "rgba(248, 185, 64, 0)",
      "toolbar_field_focus": "rgb(55, 52, 58)",
      "toolbar_field_highlight_text": "rgba(46, 33, 34, 0.75)",
      "toolbar_field_highlight": "rgb(174, 145, 154)",
      "toolbar_field_separator": "rgb(250, 164, 194)",
      "toolbar_field_text_focus": "rgb(243, 179, 117)",
      "toolbar_top_separator": "rgba(157, 198, 183, 0)",
      "toolbar_vertical_separator": "rgba(217, 212, 203, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{07f7d140-5aee-42ea-a836-2cf7c86041d8}"
    }
  }
}