here is an example of a monochromatic that doesn't pop.
http://images.suite101.com/1230119_com_reducecont.png
thanks to Christine Mann for the picture and accompanying article. We are thinking with the same mind on this subject.
Pop is something that really works with quilts but it isn't the only answer. Creativity can go in as many directions as people can have ideas.
Monochromatics that don't pop can be great for the abstract design, and can keep a "cologe" (sp) styled quilt from becomming to busy. It can take just about any color and add a zen like quality to it.
If you look at traditional interior decorating books a monochromatic color scheme can create some of the most elegant looks imaginable.
I look forward to when you can post a picture of your quilt. Maybe a friend has a digital camera and would be willing to take a picture?