lor are either specified
/// or the default is used. In any case, on any Insert or Append, only three
/// colors are used. The default color of the RichTextBox (signified by a
/// semicolon (;) without a definition), is always the first color (index 0) in
/// the color table. The second color is always the text color, and the third
/// is always the highlight color (color behind the text). The color table
/// should have the form ...
///
/// {colortbl ;[TEXT_COLOR];[HIGHLIGHT_COLOR];}
///
/// </summary>
/// <param name="_textColor"></param>
/// <param name="_backColor"></param>
/// <returns></returns>
private string GetColorTable(RtfColor _textColor, RtfColor _backColor) {
StringBuilder _colorTable = new StringBuilder();
// Append co