Examine source code of Winter Blue Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Winter Blue Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-003-31b6bea3c78e3a19fd889b0389652a94.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(66, 104, 124)",
      "toolbar_text": "rgb(179, 218, 241)",
      "frame": "rgb(142, 179, 201)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(174, 223, 174)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(255, 166, 220)",
      "popup": "rgb(174, 223, 174)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_active": "rgb(198, 230, 198)",
      "button_background_hover": "rgb(174, 223, 174)",
      "frame_inactive": "rgb(17, 193, 214)",
      "icons": "rgb(255, 166, 220)",
      "ntp_background": "rgb(112, 113, 113)",
      "ntp_text": "rgb(174, 223, 174)",
      "popup_border": "rgb(112, 117, 113)",
      "popup_highlight_text": "rgb(0, 0, 0)",
      "popup_highlight": "rgb(17, 146, 214)",
      "sidebar_highlight_text": "rgb(17, 146, 214)",
      "sidebar_highlight": "rgb(17, 146, 214)",
      "sidebar_text": "rgb(53, 162, 124)",
      "tab_text": "rgb(255, 166, 220)",
      "toolbar_bottom_separator": "rgb(119, 168, 119)",
      "toolbar_field_border": "rgb(0, 0, 0)",
      "toolbar_field_focus": "rgb(170, 221, 170)",
      "toolbar_field_highlight_text": "rgb(255, 255, 255)",
      "toolbar_field_highlight": "rgb(119, 168, 119)",
      "toolbar_field_separator": "rgb(0, 0, 0)",
      "toolbar_field_text_focus": "rgb(255, 255, 255)",
      "toolbar_top_separator": "rgb(0, 0, 0)",
      "tab_loading": "rgb(255, 166, 220)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{503e69b5-28ee-4b4a-8773-1e372b575bf2}"
    }
  }
}