ColorPicker class has a number of undocumented methods in javadoc
Here is the list
constructor javafx.scene.control.ColorPicker(javafx.scene.paint.Color)
method javafx.scene.control.ColorPicker.getCustomColors()
field javafx.scene.control.ColorPicker.STYLE_CLASS_BUTTON
field javafx.scene.control.ColorPicker.STYLE_CLASS_SPLIT_BUTTON
Here is the list
constructor javafx.scene.control.ColorPicker(javafx.scene.paint.Color)
method javafx.scene.control.ColorPicker.getCustomColors()
field javafx.scene.control.ColorPicker.STYLE_CLASS_BUTTON
field javafx.scene.control.ColorPicker.STYLE_CLASS_SPLIT_BUTTON