Nope. I'm using color very deliberately in this game. Red glowy things are things that WILL hurt you.
I might do some other visual effect, maybe some kinda green electrity arcing along the guns or something. But it would just be for effect, not precise enough to time your shots by. This isn't Dead Space.
It needs a life bar, too. Possibly also some other kind of gameplay-related data, at some point. Maybe I'll do it in the form of a ring around the player's ship or something so you don't have to glance at the corner of the screen. We'll see.