I talked with Avi and he was a great help. I sent him some pics of both bottles and he confirms what he says after seeing the pics. Here is his response, Hi Bob, most likely its only less fluorescent color additive we use inside that you get, not changed really the active materials, we had some complains that the color is too strong and it stick to the paint , so we had to reduce the color powder.

Thanks for the great help to all who answered, and some of you were right as to what the issue was. Thanks Bob.