Actually it's not. Blue more negatively affects the photoreceptors in your eyes that are responsible for night vision. It's why you see Red illumination used in the military and as an offering on vendors who offer lights - for example Littlite offers white and red on their switchable lights. Getting ready to order a couple of those myself to illuminate the areas where our computers are better.
I have to bring up the first Nintendo home console It was a little Mario tennis game that used red to show up the figures. You couldn't play an hour without developing a headache from the red. And when your stage is black if you sit out in the audience which color are you going to pick up more often if some spills a bit onto stage? Personally I see red (as we have tried it in multiple venues the outcome always going to blue) before I ever see the blue. Which is also why when they are doing retrofits of new systems many companies put in blue glass bulbs in the metal cages for the running lights back stage.