CharacterFormat.HighlightColor: Highlighting color must be one of the following: Black, Blue, Cyan, DarkBlue, DarkCyan, DarkGray, DarkGreen, DarkMagenta, DarkRed, DarkYellow, Green, LightGray, Magenta, Empty, Red, WhiteYellow
CharacterFormat.Scaling: Gets or sets the percentage by which each character is expanded or compressed when it is rendered in the document. Supported only in DOCX and DOC formats.