Have the background be white at default

Me and my friend go on Anondraw a lot, but what annoys us is that we have to draw in white space in order to draw. Sure, we can draw on the plain background, but it's hard to see the picture. We both think the background should be white at default, or alternatively, have choices as to what the background is (whether it's plain, white, black, or whatever) in the "Settings" or wherever you would choose to put it.