Good comparison Jim. All of them look different depending on lighting and the camera you use. Especially Charleston.
By the way, I've tried other "Charleston Green" colors from one or 2 other manufacturers and they're not very close at all.
If you have spraying equipment and want to work with automotive paints. I have an exact color match through a local paint supply house in polyurethane paint. They will ship it to you with the necessary additives via a phone order. The company is BAPS Auto Paint Supply in York, PA. Just call them and tell them it's "GE Brass Bell Green" and tell them that the mix formula is filed under "AFCA". They have a handful of other colors too that I've had color matches. Their paint guy is incredible with his matching abilities. He even matches the original sheen. .