On reflection...

A curious phenomenon presented itself for inspection on this duck egg blue building on a corner of the street where I reside.

Try as I might, I could not discover from where the weird reflections emanate. The sun was behind the building, and therefore its light was reflecting back onto the facade from either the building directly opposite (an estate agent's, the windows of which display house details, illuminated by halogen bulbs), or buildings diagonally opposite.

It's foxed me, that's for sure.