I wore disposable diapers until I was sometime between 3 and 4. Looking at my old photos, it appears that I wore plastic backed diapers. 5 years later, I discovered that they make tape diapers for people older than toddlers, but some of the first bigger diapers that I saw were blue, and therefore, I developed a preference for blue diapers over plain white diapers to this day and I would only wear the blue ones (maybe pink too) in the future, when I’m on my own.