Haint Blue ceilings. The blue ceiling is a bit of a rural myth; the thought behind it was that bugs would get confused and think the porch ceiling was the sky. It was also said to ward off ghosts, and Sherwin-Williams' Haint Blue paint is named after the ghosts of the Afro-Caribbean legends. Whether it works or not, it's a charming antique touch to add to your porch and an interesting conversation starter.It's kind of funny how viral this blue ceiling story is. After my friend Suzannah explained to me why her porch ceiling was blue, I had mine painted blue. Then my brother saw it and had his painted blue, and the whole thing went full circle a few years later when the painter came back for other work and told me the story of blue ceilings. I had to remind him that I was the one who originally told him the story, and he said he'd painted dozens of ceilings blue after repeating the story to his clients. It's an irresistible design move.