diff --git a/src/main/java/cz/kamma/kfmanager/ui/SyncDirectoriesDialog.java b/src/main/java/cz/kamma/kfmanager/ui/SyncDirectoriesDialog.java
index 9ac7c2c..7b436b2 100644
--- a/src/main/java/cz/kamma/kfmanager/ui/SyncDirectoriesDialog.java
+++ b/src/main/java/cz/kamma/kfmanager/ui/SyncDirectoriesDialog.java
@@ -38,6 +38,7 @@ public class SyncDirectoriesDialog extends JDialog {
         initComponents(leftDir, rightDir);
         config.restoreSyncDialogState(this);
         if (getBounds().x == -1) setLocationRelativeTo(owner);
+        applyAppearance();
 
         addWindowListener(new WindowAdapter() {
             @Override
@@ -204,6 +205,49 @@ public class SyncDirectoriesDialog extends JDialog {
         }
     }
 
+    private void applyAppearance() {
+        if (config == null) return;
+        Color bg = config.getBackgroundColor();
+        if (bg == null) return;
+        updateComponentBackground(getContentPane(), bg);
+    }
+
+    private void updateComponentBackground(Container container, Color bg) {
+        if (container == null) return;
+        container.setBackground(bg);
+        boolean dark = isDark(bg);
+        Color selColor = config != null ? config.getSelectionColor() : null;
+
+        for (Component c : container.getComponents()) {
+            if (c instanceof JPanel || c instanceof JScrollPane || c instanceof JViewport || c instanceof JTabbedPane || c instanceof JButton || c instanceof JComboBox || c instanceof JTable) {
+                if (!(c instanceof JToggleButton)) {
+                    c.setBackground(bg);
+                }
+            }
+            if (c instanceof JLabel || c instanceof JCheckBox || c instanceof JRadioButton || c instanceof JButton) {
+                c.setForeground(dark ? Color.WHITE : Color.BLACK);
+            }
+            if (c instanceof javax.swing.text.JTextComponent) {
+                javax.swing.text.JTextComponent tc = (javax.swing.text.JTextComponent) c;
+                tc.setBackground(bg);
+                tc.setForeground(dark ? Color.WHITE : Color.BLACK);
+                tc.setCaretColor(dark ? Color.WHITE : Color.BLACK);
+                if (selColor != null) {
+                    tc.setSelectionColor(selColor);
+                }
+            }
+            if (c instanceof Container) {
+                updateComponentBackground((Container) c, bg);
+            }
+        }
+    }
+
+    private boolean isDark(Color c) {
+        if (c == null) return false;
+        double darkness = 1 - (0.299 * c.getRed() + 0.587 * c.getGreen() + 0.114 * c.getBlue()) / 255;
+        return darkness >= 0.5;
+    }
+
     private void browsePath(JTextField field) {
         JFileChooser chooser = new JFileChooser(field.getText());
         chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
@@ -421,21 +465,30 @@ public class SyncDirectoriesDialog extends JDialog {
     }
 
     private static class SyncTableCellRenderer extends DefaultTableCellRenderer {
+        private boolean isDark(Color c) {
+            if (c == null) return false;
+            double darkness = 1 - (0.299 * c.getRed() + 0.587 * c.getGreen() + 0.114 * c.getBlue()) / 255;
+            return darkness >= 0.5;
+        }
+
         @Override
         public Component getTableCellRendererComponent(JTable table, Object value, boolean isSel, boolean hasFocus, int row, int col) {
             Component c = super.getTableCellRendererComponent(table, value, isSel, hasFocus, row, col);
             SyncTableModel model = (SyncTableModel) table.getModel();
             SyncEntry entry = model.entries.get(row);
 
+            boolean dark = isDark(table.getBackground());
             if (!isSel) {
                 if ("=".equals(entry.relation)) {
-                    c.setForeground(Color.BLACK);
+                    c.setForeground(dark ? Color.WHITE : Color.BLACK);
                 } else if ("!=".equals(entry.relation)) {
-                    c.setForeground(Color.RED);
+                    c.setForeground(dark ? new Color(255, 120, 120) : Color.RED);
                 } else if ("->".equals(entry.relation)) {
-                    c.setForeground(new Color(0, 100, 0)); // Dark green
+                    // Left only / newer
+                    c.setForeground(dark ? new Color(120, 255, 120) : new Color(0, 130, 0));
                 } else if ("<-".equals(entry.relation)) {
-                    c.setForeground(Color.BLUE);
+                    // Right only / newer
+                    c.setForeground(dark ? new Color(130, 180, 255) : Color.BLUE);
                 }
             }
             
@@ -448,6 +501,10 @@ public class SyncDirectoriesDialog extends JDialog {
                 setHorizontalAlignment(LEFT);
             }
 
+            if (c instanceof JComponent) {
+                ((JComponent) c).setBorder(BorderFactory.createMatteBorder(0, 0, 1, 1, dark ? new Color(60, 60, 60) : new Color(220, 220, 220)));
+            }
+
             return c;
         }
     }