I remember discussing the dress image at work some colleagues; one had never heard of it. We went back to his desk and googled it, both of us saw white and gold. I had always seen white and gold and couldn’t get my head around how anyone could think it was anything but. Mentalists, clearly.
We went on the Wikipedia page for it, looking for an explanation. I was talking through some aspect or other and the image I was looking at just changed, as I spoke. It was weird, like time slowed down for a second while my brain tried to make sense of it. That’s they only time I’ve ever been properly gob-smacked, lost for words. I knew without doubt that the image on the screen hadn’t changed, yet I was also certain it had changed. After that I could change what colour it was by sort of tuning out while looking at it and just deciding.
That shoe is grey and turquoise though.