There was a class at my LQS where they made a bargello from ombre fabric, in addition to a strata so I don't see why not. You have to be careful when cutting the non strata portion to keep the seam allowance where you want it.
I have the book "Bargello Tapestry Quilts" which tells you how to design and construct bargellos. Very informative.
http://www.amazon.com/Bargello-Tapes...lo+quilt+books