private void btn_createlightpanel3_Click(object sender, EventArgs e)
        {
            if (panel3 == null || panel3.IsDisposed)
            {
                panel3 = new LightPanel();
            }

            panel3.BackColor = selectedcolour;
            panel3.Text      = "Panel 3";
            panel3.Show();
            btn_copylabel3colour.BackColor = panel3.BackColor;
        }
        private void btn_createlightpanel_Click(object sender, EventArgs e)
        {
            if (panel1 == null || panel1.IsDisposed)
            {
                panel1 = new LightPanel();
            }

            panel1.BackColor = selectedcolour;
            panel1.Text      = "Panel 1";
            panel1.Show();
            btn_copypanel1colour.BackColor = panel1.BackColor;
        }