[Zev]

Also, what happens if you set all your background colours to white in IB

In that case, its easy for marketing to do it themselves. IB is a UI, after all. You click on a field and select the new color from the wheel a bunch of times.

The alternative is that you go through code and manually paste it in yourself. And you can't `sed` it because not all backgroundColor properties belong to views that need changing (labels might be clear, some other view opaque, etc)