I never in my life thought I would be confused by Gomer Pyle !
lol, I guess that does sound confusing and I'm no expert on it myself. The difference is whether you're talking about color as frequencies of light or color as pigments. White light is all colors, black is no light at all. With pigments it's just the opposite. Black pigment (think black paint) is a combination of all colors and white pigment has none.
Blue is shortwave. It interacts with matter (snow, air, water) more than other colours from the spectrum.