Banana / Coral Glow - Black Spec Progression

To all those who have older/adult coral glow and banana morphs:

It appears well documented that the "black specs" commonly see in this morph progress and become more numerous with age. Does anyone know at what point this begins to slow down or stop? I.e. once a coral glow/banana ball python gets to a certain age, can I reasonably expect that is what he will look like as an adult? What would be the earliest I would be able to tell?

Thanks!

Mine stopped at about 1.5 years.

http://uploads.tapatalk-cdn.com/2016...b4f192055f.jpg here he is now. Hatched 2014. 1100g.

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