Examine source code of Hispanic Heritage Theme (Concept)

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Hispanic Heritage Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-011-d53e0d0d1538ed554a90e056a2f04eca.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(29, 71, 153)",
      "toolbar_text": "rgb(227, 235, 240)",
      "frame": "rgb(3, 136, 104)",
      "tab_background_text": "rgb(242, 242, 238)",
      "toolbar_field": "rgb(46, 89, 119)",
      "toolbar_field_text": "rgb(191, 207, 218)",
      "tab_line": "rgb(85, 87, 87)",
      "popup": "rgb(193, 101, 3)",
      "popup_text": "rgb(249, 250, 252)",
      "button_background_active": "rgb(52, 18, 142)",
      "button_background_hover": "rgb(135, 147, 2)",
      "frame_inactive": "rgb(125, 12, 12)",
      "icons_attention": "rgb(112, 193, 5)",
      "icons": "rgb(184, 189, 227)",
      "ntp_background": "rgb(47, 14, 85)",
      "popup_border": "rgb(2, 64, 3)",
      "popup_highlight": "rgb(75, 108, 120)",
      "sidebar_border": "rgb(14, 14, 14)",
      "sidebar_highlight_text": "rgb(135, 139, 140)",
      "sidebar_highlight": "rgb(4, 68, 112)",
      "sidebar_text": "rgb(243, 247, 251)",
      "sidebar": "rgb(2, 79, 83)",
      "tab_background_separator": "rgb(244, 244, 239)",
      "tab_loading": "rgb(4, 111, 13)",
      "tab_selected": "rgb(143, 65, 86)",
      "tab_text": "rgb(255, 255, 251)",
      "toolbar_bottom_separator": "rgb(235, 241, 237)",
      "toolbar_field_border_focus": "rgb(233, 240, 244)",
      "toolbar_field_border": "rgb(32, 36, 49)",
      "toolbar_field_focus": "rgb(178, 188, 12)",
      "toolbar_field_highlight_text": "rgb(245, 245, 238)",
      "toolbar_field_highlight": "rgb(3, 39, 70)",
      "toolbar_field_text_focus": "rgb(60, 60, 60)",
      "toolbar_top_separator": "rgb(1, 21, 38)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e675c1ce-4b36-49bf-8030-132349704c3f}"
    }
  }
}