From the library help file, it seems that I cannot set an individual row or cell colour but I can choose a colour to highlight every other row...but I will pm the author to see if his "professionl" version can do it
The dot net includes only these options for changing backcolor of selection in a table:
BackColor Overridden. Gets or sets the background color of even-numbered rows of the grid.
SelectionBackColor Gets or sets the background color of selected rows.
SelectionForeColor Gets or set the foreground color of selected rows.