Each column in a grid has properties called DynamicBackcolor and DynamicForeColor.

To change the color of the active row, do the following:

1) Add a property to the grid called CurrentRecord

2) In the AfterRowColChange method of the grid, add the following code:
this.CurrentReocrd=recno()
this.Refresh

3) In each column's DynamicBackColor property, put the following:
"iif(recno()=this.parent.CurrentRecord,RGB(0,0,200),RGB(255,255,255) )"

4) In each column's DynamicForeColor property, put the following:
"iif(recno()=this.parent.CurrentRecord,RGB(255,255,255),RGB(0,0,0) )"

Note that the properties in DynamicBackColor and DynamicForeColor must me in quotes, or you'll get an error.