Purple rings forming??

[Dominicg12]

Hello I am beginnner with orchids only having a small collection. But in one of my orchids a issue has arose with purple rings forming on my Brassavola orchid. This has not been something that I have seen in the past and am wondering the best way to deal with it going forward in treatment. It seems to be something new that came since purchasing. This orchid was previously treated for scale and reapotted waiting for new root growth before I mount. Since the purple ring/markings appeared on leafs that werent even treated. Anyone have any insite on this or suspitions?
i was thinking it would be a dieases or virus possibly.