ADDITIONAL SYSTEM INFORMATION :
Tested on Linux and Windows, with Java version 8u361 and with Java 20.1 and JavaFX 20.1

A DESCRIPTION OF THE PROBLEM :
When a colour with transparency is used, FontSmoothingType.LCD produces the wrong colour

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the attached code and compare the colour of the Text nodes with the colour of the border

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The colour of the Text nodes should be the same as the colour of the border, independently of which FontSmoothingType is selected
ACTUAL -
When FontSmoothingType.LCD is selected, the color of the Text nodes is wrong

---------- BEGIN SOURCE ----------
public class Transparency extends Application {

public static void main( String[] args ) {
launch( args );
}

@Override
public void start( Stage primaryStage ) throws Exception {
primaryStage.setTitle( "prism.lcdtext = " + System.getProperty( "prism.lcdtext" ) );

Text txt = new Text( "TEST" );
TextField tf = new TextField( "TEST" );

ChoiceBox<FontSmoothingType> cb = new ChoiceBox<>( FXCollections.observableArrayList( FontSmoothingType.values() ) );
cb.getSelectionModel().selectedItemProperty().addListener( ( obs, ol, ne ) -> {
( (Text) tf.lookup( ".text" ) ).setFontSmoothingType( ne );
txt.setFontSmoothingType( ne );
} );
Platform.runLater( () -> cb.getSelectionModel().select( FontSmoothingType.LCD ) );
TextArea ta = new TextArea( "-fx-border-width: 5px;\n"
+ "-fx-font-size: 24px;\n"
+ "-fx-font-family: \"Open Sans\";\n"
+ "-fx-font-weight: bold;\n"
+ "\n"
+ "-fx-background-color: transparent;\n"
+ "-fx-border-color: rgba(0, 44, 111, 0.4);\n"
+ "-fx-text-fill: rgba(0, 44, 111, 0.4);\n"
+ "-fx-fill: rgba(0, 44, 111, 0.4);\n"
+ "\n"
+ "" );
tf.styleProperty().bind( ta.textProperty() );
txt.styleProperty().bind( ta.textProperty() );
HBox root = new HBox( 20 );
root.setPadding( new Insets( 20 ) );

final VBox controlBox = new VBox( cb, ta );
controlBox.setSpacing( 20 );

final VBox renderBox = new VBox( txt, tf );
renderBox.setSpacing( 20 );

root.getChildren().addAll( controlBox, renderBox );

Scene scene = new Scene( root, 700, 200 );
primaryStage.setScene( scene );
primaryStage.show();
}

}
---------- END SOURCE ----------

FREQUENCY : always