Update Form1.cs so that color change for winning row, only occurs once (outside loop)

Form1.cs

-using System;
+using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Data;
@@ -148,12 +148,12 @@ namespace TicTactoe
         private void WON(string XO, Control A, Control B, Control C)
         {
             label1.Text = XO + " Wins";
+            A.BackColor = System.Drawing.Color.Tomato;
+            B.BackColor = System.Drawing.Color.Tomato;
+            C.BackColor = System.Drawing.Color.Tomato;
             foreach (Control x in this.Controls)
             {
-                A.BackColor = System.Drawing.Color.Tomato;
-                B.BackColor = System.Drawing.Color.Tomato;
-                C.BackColor = System.Drawing.Color.Tomato;
-
+                
                 if (x is Button && x.Tag == "play")
                 {
                     ((Button)x).Enabled = false; // disable all buttons - it is no longer possible to play when someone has won