Examine source code of Sober Wooden Floor - Dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Parquet Sobre - Night Version",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(50, 50, 50, 0.5)",
      "toolbar_text": "rgb(220, 220, 220)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(220, 220, 220)",
      "toolbar_field": "rgba(220, 220, 220, 0.8)",
      "toolbar_field_text": "rgb(50, 50, 50)",
      "tab_line": "rgb(50, 50, 50)",
      "popup": "rgba(50, 50, 50, 0.8)",
      "popup_text": "rgb(220, 220, 220)",
      "icons_attention": "rgb(50, 50, 50)",
      "ntp_background": "rgb(50, 50, 50)",
      "ntp_text": "rgb(220, 220, 220)",
      "popup_border": "rgba(220, 220, 220, 0.8)",
      "popup_highlight_text": "rgb(220, 220, 220)",
      "popup_highlight": "rgb(50, 50, 50)",
      "toolbar_bottom_separator": "rgba(50, 50, 50, 0.5)",
      "toolbar_field_border_focus": "rgba(220, 220, 220, 0.8)",
      "toolbar_field_highlight_text": "rgb(220, 220, 220)",
      "toolbar_field_highlight": "rgba(50, 50, 50, 0.8)",
      "toolbar_top_separator": "rgba(50, 50, 50, 0.8)",
      "tab_loading": "rgb(50, 50, 50)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bd2103df-1dc3-4359-80d2-95341105565f}"
    }
  }
}