It seems that current BMW 5W30 has different additive pack and base stocks so old VOA may not be really useful anymore.
This is from BMW Tech Bulletin # 110898, updated in 6/2006:
"Castrol, the supplier of the High Performance Synthetic Oil SAE 5W-30, is now producing this oil domestically to ensure supply to the growing demand. The oil color may appear to be lighter due to different additive pack and base stocks used, however the performance specifications remain the same. It is fully compatible with other stock of the familiar amber color"
BMW may use full synthetic to meet BMW LL-01 and LL-04 spec now. This oil used to meet BMW LL-98 only. So, it's time to have a new VOA.