// Usually Interesting classes will need to import significant Java classes.

// The "javadoc" file will tell give you more information.
// In this case, just Google for "java Color"

import java.awt.Color ;

// The reason why you don't do this for World, Turtle, Picture, etc.
// is because these have been included in your class path.
// That is neither the usual or recommended practice in Java.

public class Oct20B {
  
}