private void btn_ls4Col_Click(object sender, EventArgs e)
{
DialogResult result = dia_ls4.ShowDialog();
if (result == DialogResult.OK)
{
btn_ls4Col.BackColor = dia_ls4.Color;
btn_ls4Col.ForeColor = dia_ls4.Color;
btn_ls4Col.Text = ColorTranslator.ToHtml(dia_ls4.Color);
SaveSettings();
}
}