I do not think it is that odd. I cannot remember the color of the t's couch (it is bright but it may be yellow or red or orange - I just do not remember) and I have been going for a year and a half. Also the room is always dark in my memory and each week I am always surprised when it is light in there. Also I cannot remember really what she looks like even though I remember her voice. So it seems rather usual to me that your memory and the particulars of the room may not match up.