Bold selected record in grid

How can I bold the currently selected record in a grid?

Thanks in advance!

displayOption is used to set text color and background color for individual records.
No one of font methods works.

cf

http://axapta.blogcu.com/using-colours-in-grids/752010

there is a fontBold(boolean) method that I can use but its not working. I should say that I am using a temporary table. Would it be causing an issue if its a temporary table for the datasource?