Set the backcolor for more than one cells in tablelayoutpanel

public partial class Form1 : Form
{
    List<TableLayoutCellConfig> tlcc = new List<TableLayoutCellConfig>();
    
    public Form1()
    {
        InitializeComponent();
        tlcc.Add(new TableLayoutCellConfig(0, 0, Brushes.Green));
        tlcc.Add(new TableLayoutCellConfig(0, 1, Brushes.Red));
        tlcc.Add(new TableLayoutCellConfig(1, 0, Brushes.Lime));
        

    }
    
    private void TableLayoutPanel1_CellPaint(object sender, TableLayoutCellPaintEventArgs e)
    {
        foreach (TableLayoutCellConfig conf in tlcc)
        {
            if (e.Row == conf.Row && e.Column==conf.Column)
            {
                e.Graphics.FillRectangle(conf.Brush, e.CellBounds);
                continue;
            }
        }
    }

    private void button1_Click(object sender, EventArgs e)
    {
        tlcc.Add(new TableLayoutCellConfig(1, 1, Brushes.Pink));
        tableLayoutPanel1.Invalidate();
    }

    
}

class TableLayoutCellConfig
{
    public TableLayoutCellConfig(int X, int Y, Brush Background)
    {
        this.Column = X;
        this.Row = Y;
        this.Brush = Background;
    }
    
    private int row;
    public int Row
    {
        get { return row; }
        set { row = value; }
    }

    private int column;
    public int Column
    {
        get { return column; }
        set { column = value; }
    }

    private Brush brush;
    public Brush Brush
    {
        get { return brush; }
        set { brush = value; }
    }


}

List<TableLayoutCellConfig>

TableLayoutPanel1_CellPaint