It never goes away fully, it just becomes thinner as it grows. Blacks have a more grey coloration when they are older from what Ive seen. I dont like how silvers look when they get over two feet. They look really chunky and get drop eye, whereas blacks stay slimmer and dont get drop eye. To me thats worth the extra 30 dollars I paid for it, even if they look very similar.
Im not sure how big this one is, but its at least 18". The colors never go away, just slim down a bit.
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