not that you'd need it much in san diego

but unless you meant for the blue color you might be able to set your white balance for snow/frost...i have a rebel xt and it takes a photo of the white stuff and then put it in your custom white balance.,, i would think your manual would tell you how to do it for your camera.. someone said white stuff turns blue like that due to reflection or something, i just know the first pics i took with my camera this winter all the snow was blue till is set it for custom