Very minor changes.

Author: pavz02

src/main/java/DialogBox.java

@@ -89,7 +89,7 @@ public void lunaGui() {
         if (dialog.getText().contains(Ui.invalidTaskFormatBasicExceptionMessage())
                 || dialog.getText().contains(Ui.invalidKeywordExceptionMessage())
                 || dialog.getText().contains(Ui.invalidNumberExceptionMessage())) {
-            dialog.setBackground(new Background(new BackgroundFill(Color.YELLOW, new CornerRadii(15.0),
+            dialog.setBackground(new Background(new BackgroundFill(Color.RED, new CornerRadii(15.0),
                     Insets.EMPTY)));
         }
     }

src/main/java/MainWindow.java

@@ -61,6 +61,7 @@ private void handleUserInput() {
             Platform.exit();
             System.exit(0);
         }
+
         userInput.clear();
     }
 }

src/main/java/Storage.java

@@ -71,7 +71,6 @@ static void uploadToHardDrive() {
                 String description = t.getDescription();
                 String tag = "";
                 if (t.getIsTagged()) {
-                    System.out.println("yes");
                     tag = t.getTag();
                 }