When I was a young lab technician, our goal with snow scenes much like this was to bring neutrality to the snow, correcting the color cast to make it white or gray. So what is the color of snow? Is it just white and gray. Is water blue? Does it look blue right before you drink it from a glass. Maybe if it's in a blue glass! Funny, but our eyes are so efficient that when we see snow in the shade, most of us would concur that it is indeed white. But snow is only as white as the light that is reflecting from it is. When the ambient light of pre-dawn is reflecting from it, however, it takes on a whole different hue. This is one of the reasons I attempt to photograph snow at sunrise; to capture it when the ambient light brings out a unique palette. This image would be fine if corrected. It could even make a profound black and white image. I think it is also fine just as it is, although I know some will find the cast objectionable. I say it is what it is!