I have recently moved my arandas, mokaras, semi-terete vandas and kagawaras to a more exposed section of the growing area. They now receive full sun to around noon and 50% shade the rest of the day. I have noticed an increased intensity of colour but more compact arrangement(crowded) of flowers on the spike. This can be seen in the pictures of the latest blooming of Kgw Seri Perak. The flowers used to be spaced less closely together. There are 25 flowers and 16 unopened buds.
Incidentally the name is spelt either Seri or Sri Perak. I checked and found that this is not a registered name and therefore I couldn't trace the parentage.