Here is the fifth Puzzler block in the series I am doing with several of my quilting friends. Laying them out on the floor today, I grabbed some black and white prints off the cutting table to see if it was a combo that I liked. Black and white prints as sashing is a definite possibility. It's all going to come down to scale.This photo shows a print that doesn't hold its own against the colorful blocks.
This one is better, but not there yet.
Adding black and white borders, sashing, or binding to an otherwise colorful quilt is what I like to refer to as the "Mary Engelbreit" effect. See this ornament to get an idea of what I mean.