I think that this is the perfect costume and its about time.  Think about it; there are many times a spider blends with the surroundings or hides in the dark hunting its prey.  It makes sense that spiderman should be ninja like in stealth with dark clothing to catch criminals.  I think that given the fact that peter parker is very intelligent, he would also conclude that he would want to blend in with the darkness, especially at night.  During the day, the good ole blue and red was great.  but at night?  it should definitely be black and red like this.  Given his vast intellect, you would have thought he would have made a costume that acts like those eye glasses with auto darkness; clear inside and then when the sun hits them, they add darkness for sunglasses.  Same thing should apply here.  at night his costume is black and red.  during the day when the sun hits it or when ultra violet light hits it, red and blue.