Whiitepine: Can't imagine why you would be interested in the values of 3.5 squares. Could be a "clue" to what you've been doing. I knew you were kidding but it was such a striking picture that my mind skittered off to a different pathway. Black and white photos for value study was a tip I received on FB. I asked a quilter how she did Bonnie's GI in browns and beiges without knowing anything about the quilts design. I know you used the CT fabric consistently for your green. Love the more subdued green you achieved as a result. Some of my favorite GI's are the ones that used a grayish green rather than the true grass green.