Do some lines of Pastel get darker over time???

[EverEvolvingExotics]

The pastel definitely looks pastel to me. Pastels do tend to "brown out" as they age; especially pastels that have a lot of orange coloration as hatchlings. The orange tends to turn brown, but that really high blushing and light head color are dead giveaways for pastel...

If you're still worried that she isn't a pastel, check the belly scales and the eyes. Pastels should have a clear white belly and green to blue-green eyes...

Everything mentioned above is spot on. These days it's incredibly hard to find a pastel that doesn't brown out at least a little.