I use a very low powered red light for scanning and then a higher powered red shooting light. Actually all my shooting lights are reostat controlled so I choose how bright I need and they can also be used for scanning.
All colors will spook animals at night if not used properly just as all colors can be used successfully IF used correctly.
Red colored lenses help cover mistakes a little better or offer more forgiveness maybe a better way to put it.
"Anyone taking up handloading necessarily plays with unknown factors and takes chances. But so does anyone who drives a car,goes to a cocktail party,eats in a restaurant,or gets married."
Jack O'Connor 1963