Your right I'm sorry it was hard to see small picture. I labeled (b) opposite. I'll still tell you though a shift of 5 nanometers is not convincing. I will also still tell you that they did not start out in a basic form. Yellow in high ph(is the basic deprotonated) Red/orange in low ph (is the acid) I think I could also explain more why you saw a green color earlier in vials. Chemistry aside its actually pretty easy to under stand and laughable.Spot your fatal flaw in this first, then review your argument, then decide if you still need more data from me.