-import java.io.*;
-import java.util.*;
-
-import java.awt.*;
-import java.awt.event.*;
-import javax.swing.*;
-import javax.swing.event.*;
-
-import jalview.datamodel.*;
-import jalview.io.*;
-import jalview.jbgui.*;
-import jalview.schemes.*;
+import jalview.api.structures.JalviewStructureDisplayI;
+import jalview.datamodel.SequenceGroup;
+import jalview.io.JalviewFileChooser;
+import jalview.jbgui.GUserDefinedColours;
+import jalview.schemes.ColourSchemeI;
+import jalview.schemes.ResidueProperties;
+import jalview.schemes.UserColourScheme;
+import jalview.util.ColorUtils;
+import jalview.util.MessageManager;
+
+import java.awt.Color;
+import java.awt.Font;
+import java.awt.event.ActionEvent;
+import java.awt.event.MouseEvent;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.Hashtable;
+import java.util.StringTokenizer;
+
+import javax.swing.JButton;
+import javax.swing.JInternalFrame;
+import javax.swing.JOptionPane;
+import javax.swing.event.ChangeEvent;
+import javax.swing.event.ChangeListener;