Talking about how Color is used in spiritual traditions of different cultures, it is interesting to note the similarities of usage of color and cultural identities denoted by color usage.
Looking at how traditional religious Hindu and Buddhist art used color, it looks like they used the same palette with different intensities. Comparing Hindu Yantras with Buddhist Thangkas, this is quite evident. Then again, Zen art uses very muted colors or, most often Black on White.
In the ancient Asian traditions in particular, since all art was inextricably linked with spirituality, the significance of color extended to rituals like Pujas, where Red powder (Kumkum) or Turmeric powder (Haldi) are used for particular tasks to invoke particular mental states or dieties.
