I am going to create this GUI by using JavaFX

Be careful, just use JavaFX, no any other things like swing

In this lab, we will be creating a graphical user interface (GUI) to allow the user to select a button that will change the color of the center panel and radio buttons that will change the color of the text in the center panel. WWe will build two panels, a top panel containing three buttons and a bottom panel containing three radio buttons. Layouts will be used to add these panels to the window in the desired positions. A label with instructions will also be added to the window. Listeners will be employed to handle the events desired by the user.