Supporter Igmar Mendoza explained the reason behind the ribbons.

“The blue ribbons is because the military now are separated, so the Maduro ones, they’re red, so to make the difference, because they have the same uniform,” she said. “Now they have blue scarves, they have blue ribbons.”
— Read on wsvn.com/news/local/doral-community-reacts-to-military-uprising-in-venezuela/