Color the picture by clicking on a color swatch at the bottom of the image then click on the image where you want to apply that color. Color off-line by downloading and printing the pdf version.
Believe it or not, snow is actually transparent. Snow appears white because the crystals act as prisms, breaking up the light of the sun into the entire spectrum of color. The combination of all those colors makes the snow appear white to the human eye.
Learn more about weather in JetStream - An Online School for Weather.