Correct UI

src/main/java/tihwin/MainAppUi.java

@@ -30,6 +30,7 @@ import tihwin.ul.UlMaker;
 
 import javax.swing.*;
 import javax.swing.border.Border;
+import javax.swing.border.LineBorder;
 import javax.swing.text.AbstractDocument;
 import java.awt.*;
 import java.awt.event.WindowEvent;
@@ -87,12 +88,16 @@ public class MainAppUi extends JFrame {
         recentRomLocation = Settings.INSTANCE.getRomLocation();
         destinationDirectoryLbl.setText(FilesHelper.getRealFolder(Settings.INSTANCE.getDestination()));
         addWindowListener(getWindowListener());
+
         Border fitMoreTextOnButtonBorder = BorderFactory.createCompoundBorder(
-                BorderFactory.createLineBorder(Color.lightGray),
+                BorderFactory.createLineBorder(Color.gray),
                 BorderFactory.createEmptyBorder(5, 5, 5, 5));
         diskImageSelectBtn.setBorder(fitMoreTextOnButtonBorder);
         destinationSelectBtn.setBorder(fitMoreTextOnButtonBorder);
+        diskImageSelectBtn.addMouseListener(new TwButtonsActionListener());
+        destinationSelectBtn.addMouseListener(new TwButtonsActionListener());
 
+        titleField.setBorder(new LineBorder(Color.lightGray));
     }
 
     private WindowListener getWindowListener() {

src/main/java/tihwin/ui/LanguageComboBox.java

@@ -24,7 +24,6 @@ import tihwin.ui.model.LocaleHolder;
 import tihwin.ui.model.SettingsLanguagesSetup;
 
 import javax.swing.*;
-import javax.swing.plaf.basic.BasicArrowButton;
 import javax.swing.plaf.basic.BasicComboBoxUI;
 import java.awt.*;
 import java.util.List;
@@ -41,9 +40,8 @@ public class LanguageComboBox extends JComboBox<LocaleHolder> {
         setUI(new BasicComboBoxUI(){
             @Override
             protected JButton createArrowButton() {
-                BasicArrowButton button = new BasicArrowButton(BasicArrowButton.SOUTH,
-                        COLOR_SKY_BLUE, COLOR_SKY_BLUE, Color.white, COLOR_SKY_BLUE);
-
+                JButton button = new JButton();
+                button.setBackground(COLOR_SKY_BLUE);
                 button.setBorder(BorderFactory.createEmptyBorder());
                 button.setVisible(false);
                 return button;

src/main/java/tihwin/ui/TwButtonsActionListener.java

@@ -0,0 +1,57 @@
+/*
+    Copyright 2022 Dmitry Isaenko
+
+    This file is part of Tihwin.
+
+    Tihwin is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Tihwin is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with Tihwin.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package tihwin.ui;
+
+import javax.swing.*;
+import javax.swing.border.Border;
+import java.awt.*;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseListener;
+
+public class TwButtonsActionListener implements MouseListener {
+    private final Border normalBorder = BorderFactory.createCompoundBorder(
+            BorderFactory.createLineBorder(Color.gray),
+            BorderFactory.createEmptyBorder(5, 5, 5, 5));
+
+    private final Border boldBorder = BorderFactory.createCompoundBorder(
+            BorderFactory.createLineBorder(Color.gray),
+            BorderFactory.createCompoundBorder(
+                    BorderFactory.createLineBorder(new Color(164, 181, 255)),
+                    BorderFactory.createEmptyBorder(4, 4, 4, 4)
+            )
+    );
+
+    @Override
+    public void mouseEntered(MouseEvent mouseEvent) {
+        ((JButton) mouseEvent.getSource()).setBorder(boldBorder);
+    }
+
+    @Override
+    public void mouseExited(MouseEvent mouseEvent) {
+        ((JButton) mouseEvent.getSource()).setBorder(normalBorder);
+    }
+
+    @Override
+    public void mouseClicked(MouseEvent mouseEvent) {}
+    @Override
+    public void mousePressed(MouseEvent mouseEvent) {}
+    @Override
+    public void mouseReleased(MouseEvent mouseEvent) {}
+
+}

src/main/resources/locale_ru_RU.properties

@@ -8,7 +8,7 @@ InterruptedAndFilesDeletedText=\u0417\u0430\u0434\u0430\u0447\u0430 \u043F\u0440
 InterruptedAndFilesNotDeletedText=\u0417\u0430\u0434\u0430\u0447\u0430 \u043F\u0440\u0435\u0440\u0432\u0430\u043D\u0430 \u0438 \u0444\u0440\u0430\u0433\u043C\u0435\u043D\u0442\u044B \u0444\u0430\u0439\u043B\u0430 \u041D\u0415 \u0443\u0434\u0430\u043B\u0435\u043D\u044B
 InterruptedText=\u041F\u0440\u0435\u0440\u0432\u0430\u043D\u043E
 isoFilesText=\u0424\u0430\u0439\u043B\u044B ISO
-WelcomeText=\u041F\u0440\u0438\u0432\u0435\u0442! \u042D\u0442\u043E Tihwin - ul-\u0443\u0442\u0438\u043B\u0438\u0442\u0430 \u0434\u043B\u044F \u0432\u0430\u0448\u0435\u0439 PS2! GPLv3+, 2022, \u0414\u043C\u0438\u0442\u0440\u0438\u0439 \u0418\u0441\u0430\u0435\u043D\u043A\u043E
+WelcomeText=\u041F\u0440\u0438\u0432\u0435\u0442! \u042D\u0442\u043E Tihwin \u2212 ul-\u0443\u0442\u0438\u043B\u0438\u0442\u0430 \u0434\u043B\u044F \u0432\u0430\u0448\u0435\u0439 PS2! GPLv3+, 2022, \u0414\u043C\u0438\u0442\u0440\u0438\u0439 \u0418\u0441\u0430\u0435\u043D\u043A\u043E
 SelectBtn=\u0412\u044B\u0431\u0440\u0430\u0442\u044C
 SelectDiskImageText=\u0412\u044B\u0431\u0435\u0440\u0438\u0442\u0435 \u043E\u0431\u0440\u0430\u0437 \u0434\u0438\u0441\u043A\u0430
 SetDestinationDirectoryText=\u0423\u043A\u0430\u0436\u0438\u0442\u0435 \u043F\u0430\u043F\u043A\u0443 \u043D\u0430\u0437\u043D\u0430\u0447\u0435\u043D\u0438\u044F