Something I heard on a science podcast, recently - There was a study done on specific neurological effects of memory, in which each of the participants, all born throughout the 1970's, were found to see numbers and letters in the same corresponding colors. Each of those participants, also, had the Fisher Price colored alphabet magnets, either on their refrigerators, or in other, visible locations in the home, at ages 2 and/or 3 years old. So, it is possible to experience synesthesia effects via memory, is what this particular neuroscientist suggested. BUT, then would it be synesthesia, respectively? I wonder if the participants of that study have other experiences, characteristic of grapheme-color synesthesia.