Ikony dialogu:
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https://github.com/marcojakob/javafx-ui-sandbox/blob/master/javafx-dialogs/src/com/sun/javafx/scene/control/skin/resources/confirm48.png
https://github.com/marcojakob/javafx-ui-sandbox/blob/master/javafx-dialogs/src/com/sun/javafx/scene/control/skin/resources/error48.png
https://github.com/marcojakob/javafx-ui-sandbox/blob/master/javafx-dialogs/src/com/sun/javafx/scene/control/skin/resources/info48.png
https://github.com/marcojakob/javafx-ui-sandbox/blob/master/javafx-dialogs/src/com/sun/javafx/scene/control/skin/resources/warning48.png

Zbyle ikony:
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http://www.famfamfam.com/lab/icons/silk/