Examine source code of Safari like

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Safari like",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(53, 52, 58)",
      "toolbar_text": "rgb(182, 180, 186)",
      "frame": "rgb(29, 29, 32)",
      "tab_background_text": "rgb(153, 153, 156)",
      "toolbar_field": "rgb(66, 65, 72)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(53, 52, 58)",
      "popup": "rgba(37, 36, 43, 0.9)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(66, 65, 72)",
      "button_background_hover": "rgb(66, 65, 72)",
      "frame_inactive": "rgb(39, 37, 49)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(81, 80, 85)",
      "tab_background_separator": "rgb(69, 69, 74)",
      "tab_loading": "rgb(255, 255, 255)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgb(0, 0, 0)",
      "toolbar_field_border_focus": "rgba(0, 0, 0, 0)",
      "toolbar_field_border": "rgb(53, 52, 58)",
      "toolbar_field_focus": "rgba(66, 65, 72, 0.99)",
      "toolbar_field_separator": "rgb(53, 52, 58)",
      "toolbar_field_text_focus": "rgb(255, 255, 255)",
      "toolbar_top_separator": "rgb(0, 0, 0)"
    }
  }
}