&gt; The default grey background with white lines was just pulled from one of Tufts&#x27;s books without a second of thought b&#x2F;c these grey backgrounds are horrible waste of ink when printing<p>I don&#x27;t follow. If it&#x27;s a waste of ink, why were they in a book? And why is it bad to copy them to ggplot, which - well, I don&#x27;t know whether print or screen or neither is considered its primary focus, but there&#x27;s no denying that it&#x27;s used a lot for screen graphics, and those don&#x27;t need to worry about ink.