How to set the background color of a particluar column in Silverlight?

[salon]

I have a datagrid control in Silverlight. I want to set the background color of first column as white and the rest of the columns as gray. I know we can do this in case of rows but can we set color of a particular column? Also on mouse over on the particular row the background color of the selected row should change and color of the first column should remain as it is.... Can we do that? Thanks in advance,