Finished dark design and implementing important Components

src/main/java/org/openautonomousconnection/oacswing/component/OACMenuItem.java

@@ -5,6 +5,7 @@
 package org.openautonomousconnection.oacswing.component;
 
 import lombok.NonNull;
+import org.openautonomousconnection.oacswing.component.design.DesignManager;
 
 import javax.swing.*;
 import java.awt.*;
@@ -34,6 +35,23 @@ public class OACMenuItem extends JMenuItem implements OACComponent {
         super(text, mnemonic);
     }
 
+    @Override
+    public void init() {
+        applyDesignColors();
+        setOpaque(true);
+    }
+
+    @Override
+    public void updateUI() {
+        super.updateUI();
+        applyDesignColors();
+    }
+
+    private void applyDesignColors() {
+        setBackground(DesignManager.resolveBackground(OACMenuItem.class, getBackground()));
+        setForeground(DesignManager.resolveForeground(OACMenuItem.class, getForeground()));
+    }
+
     @Override
     public Component add(Component comp) {
         this.initOther(comp);