Sad not to be able to see LSU purple any more - its now LSU blue

Thyroid disease has damaged my optic nerve and I recently became unable to see purple (red is the color most affected by Graves disease damage and the red has been removed from the purple turning it blue).

It is kind of sad to see LSU purple and gold as blue and gold.

According to my neuro-op, as the ability to see purple declined, my brain would still process the color as purple because it knew that LSU colors were purple and gold. One day, I said to myself "Why are the LSU colors blue?"

I wonder if hypnosis would fix it back where the brain would still process it as purple.