If an enemy piranha wing launches bombs at your ship, you can generally see the bombers coming, or at the very least the red targeting square around the bomb. If it is your own fleet's wing of piranhas it is much harder to see them, especially against a grey or black background or while zoomed out to the max. normally the bombs wont be near your ship, but sometimes they launch them at smaller more maneuverable targets if they have no other option, and it causes them to fan out and spread everywhere.
In the right scenario, a lone bomb could be mistaken for a harmless asteroid.
I created a mini-mod where i changed them to a red color, and it helps somewhat. they don't have "engines" so they don't glow or stand out like other missiles, and don't bounce like some missiles do now when out of fuel.
Just something to think about, i have gotten killed or taken massive damage from my own Piranhas a few times now