Hard to say really. All will yellow out with age but as a general rule, sharps hold their reds/orange more. There are stuff like corals which color up nicely. Just remember, a baby will be bright no matter what so you need to see the parents. Also lipstick line hold colors well too. After about 2 years, you are pretty well done with any kind of fade. Like here is an example. This is Vicky who is a Lipstick line/EBV Red group sunglow. First pic is her as a baby and other pics are her now. She's in shed now so I'll try and get a pic of her when she sheds. She's just about 3 years old now. Gotta love the huge eyes of baby boas lol.
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