Notice that the blue roofs are the same shade of blue as what you will see painted on the inside of windows and doorways in the Middle East and in some parts of the American South: https://history.howstuffworks.com/history-vs-myth/haint-blue.htm and
https://www.greecetravel.com/archaeology/mitsopoulou/blue.html
The Gullah Geechee Tradition of 'Haint Blue' Paint Keeps the Spirits Away | HowStuffWorks
The Gullah Geechee people painted porch ceilings blue to trick haints into thinking their houses were surrounded by water, which a haint can't cross.
https://history.howstuffworks.com/history-vs-myth/haint-blue.htm
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Hahahaha!!! People in the south do this because it keeps the Swallows (type of bird) from building nests on their porch ceilings.
