I was "lime green" Energized and Hydrated. I got beat up by a zed and was bleeding. I completely lost all of my color vision. Over the next thirty minutes I ate three cans of peaches and was able to maintain a "lime green" Energized and Hydrated status, but I never received a Healing notification even though I completely regained my color vision. I then logged out of the game for the night.
Tonight I logged back in and I had "lime green" Energized, Hydrated and Healing messages. After about ten minutes, the Healing status went away and a Healthy status appeared.
For some reason, it was necessary to log out and then back in before the Healing status was correctly displayed.