system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 - Black barns in Kentucky, why?

I’ve been driving through Kentucky a lot lately for work and everywhere I go I see barns painted black. Even the bourbon distilleries where they store the bourbon, many of these are painted black or a very dark color. Do they want the barns to be hot? Why are they painted this way? I’m used to seeing barns painted red.

Edit: Wow! You are all amazing!  Just ask awesome Reddit users and you shall receive. Thank you!
gpt
Kentucky has historically been a major tobacco producing state. Tobacco curing barns are covered in black creosote. The creosote keeps wood-eating insects and other critters from making a meal of the barn, and also helps raise the internal temperature, which speeds up the curing of the tobacco.