Различные цвета строк в DBCtrlGrid

Используйте событие PaintPanel:

procedure TForm1.DBCtrlGrid1PaintPanel(DBCtrlGrid: TDBCtrlGrid; Index: Integer);
begin
  with DataModule2.Table1 do begin
    if FieldByName('INDUSTRY').AsInteger > 3600 then
      DBText2.Font.Color := clGreen
    else
      DBText2.Font.Color := clYellow;
    if FieldByName('CUR_PRICE').AsInteger > 50 then
      DBText3.Font.Color := clBlue
    else
      DBText3.Font.Color := clAqua;
    if (CompareStr(FieldByName('RCMNDATION').AsString, 'BUY') = 0) then
      DBText4.Font.Color := clLime
    else if (CompareStr(FieldByName('RCMNDATION').AsString, 'HOLD') = 0) then
           DBText4.Font.Color := clRed
         else
           DBText4.Font.Color := clFuchsia;
  end;
end;