Ewwwww. My hubby is color blind so I have had this problem. I always keep a spare tooth brush just in case this happens. Right now he has a green one and I had a purple one. He went and got me an electrc tooth brush for Christmas. Then late last week he said that he has gotten both tooth brushes mixed up since we got them. Even more ewwww.

When we use to buy tooth brushes I always made sure he was there so he could tell me which colors he can tell the differance between.