My advice? Make the antenna stiff, or don't paint it at all. Flexible means paint will crack. I prefer to use staples trimmed by wire cutter. They hold their shape and paint just fine, and the pointy end is great for teaching jerks how to properly handle other people's property. For flexible antennae, I'd try to find some kind of plastic wire in the appropriate color. Alternatively, stalk your cat or dog until they shed a whisker or two. Do NOT try to pluck existing whiskers, what kind of monster are you?
