Although I am probably more safety-obsessed than the average person, this is just not something that I think that you should worry about. I recall many years ago that some studies had concluded that orange was the safest color for cars. However, I do not want to drive an orange car.
At night, since you will be driving with your headlights, tail lights, and side marker lights illuminated, I am not really sure how much difference the color of the car would make in terms of someone seeing your car. Perhaps a parked car with no lights illuminated might be more visible if it is white or silver, but–Aren’t the lights of a car visible long before the actual body of the car is able to be seen at night?
I would not worry about the color of the car, if I were you.