Mollys can take up to a year to mature, so i would not expect any coloring in the fry until they are at least 6months old. Most fry which will be full or mostly orange are born orange, while as the white males fry will be mostly white until they are a lot more older and matured where they will then start developing yellow coloring.
The dominant coloring of the individual fry will be the first to develop unless it is metallic, in which case it will probably be one of the last colors to develop, with the less dominant coloring ariving later in the mollys growth.
For example, with my female molly who has a yellow/gold body and black fins, she was born with a yellow body and pure black fins. It was not until she matured into an adult that her metallic gold coloring came into being, or the fine streaks of yellow came about in her fins- she also has a slightly mottled white to her yellow and gold body, which also took a while to come about.
My gold and black female molly, 3yrs+ old;
Dalmation mollys can be even trickier as their coloring does not always take a straightforward path as they mature into full grown adults. When i use to have dalmation mollys, many a fry which was born jet black grew into a mostly white and lightly speckled adult, and vice versa with white/grey fry maturing into black marbled adults.
This change can happen quite late in life too, many a time have i read threads where people have freaked out at their white dalmation molly has turned into a black marbled one or vice versa
!
This info just comes from my experience with raising mollys, it can differ for other poeples experiences, but this is the general way molly coloring develops
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