I'm looking for some advice on pastels, and would love people's opinions!

First of all I have a question about pastels that "brown out". Are they still recognizable as pastels later in life, or do some cases of browning out make them seem like nothing more than a brighter than usual wild-type?

I'm thinking of trying to pick up a female pastel in Feb. or March. Most of the pics online I see are of hatchlings or juveniles, and rarely anything over a year old. If I were to look for a pastel that would have very little browning out as it ages, what should I look for? Pictures of parents? Specific lines? Are there specific breeders well known for producing pastels that experience little of the browning-out?

I've read through that lemon vs graz. thread and it didn't seem to me that there was any kind of consensus on which people preferred and why.

Would it be fair to say that you just have to try your luck, purchase from someone reputable, and hope you get a snake that doesn't brown out?