I have learned that when modern quilters say “low volume” they mean a very subtle white or cream print.
When I started making blocks for do good stitches, I thought low volume meant low contrast white, gray or cream in relation to the bolder fabrics.
After making a not-so-low-volume block, I was instructed that my low volume wasn’t low volume.
THIS IS NOT LOW VOLUME:

It was considered too dark and busy.
This month we are making cross blocks with “low volume” and black. I’ve figured it out.

Allison of Allison Sews Blog is this month’s leader and has a tutorial.
Some examples of “low volume” for the modern quilter:


