Add render for WasteStack

src/main/java/solitaer/WasteStack.java

@@ -1,5 +1,8 @@
 package solitaer;
 
+import java.awt.Color;
+import java.awt.Graphics;
+
 public class WasteStack extends BaseStack {
 	
 	private static final long serialVersionUID = 1L;
@@ -17,5 +20,19 @@ public class WasteStack extends BaseStack {
 		// TODO Auto-generated method stub
 		return false;
 	}
+	
+	@Override
+	protected void paintComponent(Graphics g) {
+		// TODO Auto-generated method stub
+		super.paintComponent(g);
+		if (stackIsEmpty()) {
+			g.setColor(Color.lightGray);
+			g.fillRect(0, 0, this.getWidth(), IMAGE_HIGHT);
+
+			g.setColor(Color.black);
+			g.drawRect(0, 0, this.getWidth() - 1, IMAGE_HIGHT - 1);
+
+		}
+	}
 
 }