JavaFX in Swing - Migration & Look and feel -

oracle makes migration swing javafx possible letting mix both architectures. problem though application both architectures mixed looks rag rug , unacceptable.

is there way adapt , feel of swing javafx , feel without having write yet swing laf?

having messed around long enough swing's platform-dependent , feels, rather prefer application looks same on platforms, on linux. that's why prefer change swing, not javafx.

thank much.