Is white a color or an absence of color?

In December and January, I was struck by the number of white things in my yard. Is white a color or the absence of color? If I am drawing, white is paper color, and I draw around the white things. In painting, I use more white than any other tube of paint.

Notice I said “tube” rather than “color”. This is because my question remains, “Is white a color or an absence of color?”

Forget it. Let’s look at pictures of white things. 

White must be a color. If it wasn’t, these things would be clear, transparent, see-through.

There. Glad that got settled!

P.S. Yes, this is how December and January look in Three Rivers. Payback time is in July, August and September when other parts of the country are green and we are crunchy brown, gray, a bit of yellow, and just plain dusty.