I have realized that there was a difference, but how often can one get two new Pronto units (dark) and two new silver Pronto units together for three to five people to make observations in a manner as to not influence each other. We all looked at the screens, made our evaluations without saying a word, talked for a while after each had formed a firm opinion.
There is no possibility that the differences were not present. The only question is why. I'm sure I'll get the correct answer by asking someone on the Phillips Help Line--Ha,ha! Oh well! Daniel???