well Art, alcohol does play tricks on us. All the while you were drinking you lost sight of reality. You basically forgot that you were a blonde. Now that you have sobered up it is slowly coming back to you. You are a blonde. And the truth of who you are was hidden behind that mask alcohol provides to many of us. It is gradual at first. But in a few more months you will be close to 100% blonde again. I'm afraid there is nothing you can do about it. You can try dying your hair dark or deep red, but I'm afraid your reality has already taken hold of you.
On a lighter note, I noticed I was a bit as described around the three month mark give or take. Couldn't explain it. I even noticed the 'gremlins' at times during that period.
Just stay the course and make sure you are getting the proper vitamins and plenty of water/fluids. It should take care of itself. If it is a real concern for you - schedule a doctor appointment sooner rather than later.