Having just received my eagerly anticipated Vibrant Orange, I feel I can offer a contribution to this thread. The pen is gorgeous to look at and meets all the usual high manufacturing standards one would expect from a Pelikan.
However there is a drawback. The pen is very translucent and, when empty shines and shimmers beautifully. I filled it with a deep burgundy ink (Kyonoto Iro "Bengarairo") and was disappointed to see the ink creating a dark smudge through the barrel. If the body of the barrel had been slightly thicker, this would not happen. The "solution" is to fill it with a lighter coloured pen, e.g. orange or mandarin, but I find such inks rather difficult to use for ordinary writing so, for me, it is not a solution. It is unfortunate that the aesthetics of the pen are somewhat spoiled by this defect.
I am still glad to have it in my collection but regret this defect in the pen's design.
Have others had the same experience?