I took a screenshot and isolated the background, for those of you (like myself) who probably aren't going to use the Oekaki.
background
To use the background, click the link and right click the picture and choose "Save As.." then save it someplace where you can edit it.
The layers DO NOT work with this; it is simply a flat background.
Not trying to be a stooge or brown noser; I did this for myself and thought others could use it, too.

(Background credit, of course, is Onyx's XD)