Here's a photo of part B of the Kodak developer kit, on the left is my current bottle, the right hand bottle is unopened: Has the opened bottle died? I keep part B in my fridge (bad idea?) so I notice it most days, I mixed up some fresh dev from this bottle last week and it was a normal colour like the bottle on the right. It must have shifted colour quickly, should I chuck it? Should I be concerned about part A & C? They were opened at the same time.