So im in a java cl in highschool and were igned to make a game. How do i change the color of the dice?

You can't change the color of the font that is printed to the console (System.out.print). Once you progress in Java, you'll learn how to create graphical user interfaces (GUIs), which will allow you those options. But for all practical purposes, the console that you are printing to is specifically used for debugging code and learning to program.