red,
Yes, a "perfect" Millie fluer or porcelain, or any mottled for that matter is supposed to have each feather tipped off in a white V .
But yes, you are right too, it takes 2 years to see the full effect of their mottling pattern. They are one of the slowest developing of the patterns.
Now with that, yes like all birds, some have it, some dont, and some even have too much.
A perfect "world class" millie should have a red base, then toward the tip of each feather, ( excluding the tail, it's all black with the white tip) it should be chevroned (V ' ed) in black, and finally tipped off in white.
Genetically speaking, it's a very complex pattern and yep, few birds express it in a perfect way.
The tail tips are usually the last ones to develop it. In my eyes, it's better to have one lacking a little tipping, than it is to have one with white blobs of color all over it.
here's one coming 2
here's his 1 year old brother ( he now looks just like the older one)
here's a 3 year old lighter hen
Sorry for the blurry images, the millies are my hardest ones to get to hold still for a pic