I See the Yellow Feather at Night! (albeit dimly as of yet)
8 days ago I acquired a bottle of Vitamin A and began to heavily dose up (5,000 IU, twice a day, in additon to the A I had been taking) because of my loss in color vision at night.
Last night was the first time I cold begin to distinguish between the white and yellow feathers on my table at night.
Not great yet, but it is a start.