hi sulfath..
i also had the same problem and i posted in scn and i got the same reply as u got it was helpful but did not work for me that much. but i found a solution my own way 
String ls_objects,ls_curr,ls_name
ls_objects = dw_1.Describe("datawindow.objects") + "~t"
Do While len(ls_objects) > 0
ls_curr = mid(ls_objects, 1, pos(ls_objects, "~t") - 1)
dw_1.Modify(ls_curr + ".Font.Weight='700'")
ls_name = dw_1.Describe(ls_curr + ".Name")
if (right(trim(ls_name), 2) = "_t") then
dw_1.Modify(ls_curr+ ".Border='6'")
// dw_1.Modify(ls_curr + ".Background.Mode='1'")
dw_1.Modify(ls_curr + ".Background.Color=0")
end if
ls_objects = mid(ls_objects, pos(ls_objects, "~t") + 1)
Loop