I doubt if they were really going for colorblock, they would have just done that one panel in gray. It looks like a mistake or a repair.I don't think that was deliberate, unless Coach did a repair and the customer wanted a 2-tone. I don't ever remember seeing any other 2-tones in any Sonoma style. Or maybe it could be a factory mistake, maybe the Quality Control people were out to lunch, or the worker that made it was color blind (BTW, I'm NOT trying to insult color blind people!). The bag has an Outlet mark and the colors might be the reason. I really don't think it was supposed to be that way but it definitely makes it unique. If it was some kind of pilot bag for a possible 2-tone line I've never heard about it so if anyone's seen another one besides the ones with different color binding or piping I'd love to hear about it. Or maybe it was just re-dyed on that panel.