I ran into an issue styling a ContextMenu specifically and asked "How do you set the style for a JavaFX ContextMenu using css?" (http://stackoverflow.com/q/11127999/3340) on StackOverflow.com.

With the help of others we determined that it was an issue with the inheritance rules of CSS. Since I was using FXML the stylesheet was being applied to the Parent Node instead of the scene. I have attached an example to demonstrate the issue.