GUITextStyle problems

private void CreateMenuTitle()
        {
            GUITextStyle textStyle = new GUITextStyle();
            textStyle.FontType = "arial16";
            textStyle.SizeToText = true;
            textStyle.TextColor = Color.White;//This gives a compliation error

            _menuTitle = new GUIText();
            _menuTitle.Style = textStyle;
            _menuTitle.Text = "Main Menu";
            _menuTitle.Position = new Vector2(60f, 10);
            _menuTitle.Visible = true;
            _menuTitle.Folder = this;
        }

        GUIText _menuTitle;