using System.Linq;
using System.Drawing;
using System.Drawing.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
public class ComboBoxFonts : ComboBox
{
    public ComboBoxFonts()
    {
        this.SuspendLayout();
        this.SetStyle(ControlStyles.AllPaintingInWmPaint |
            ControlStyles.OptimizedDoubleBuffer

СolorDialogComponents colorDialogComponents1 = new ColorDialogComponents();
if (colorDialogComponents1.Show() == DialogResult.OK)
{
BackColor = colorDialogComponents1.SelectColor;
}