Shades of Yellow?

[Bubbleboy]

Hey guys, as I'm looking at vintage RC10s I'm seeing varying shades of yellowing of the nylon parts. The front and rear arms tend to be more yellow than the suspension blocks or mounts, or even the rear bulk head. Is that normal? Or is this a newbie mistake and there are different materials that make up the car that would cause this? I'm trying to find an original specimen as much as possible and hoping that a bunch of re-re parts haven't been used to make a complete roller.

Thanks,
Adam

[mikea96]

Yes that is normal for the parts you listed.

[Bubbleboy]

Thank you Mike