I think that's just the color of that particular molded part.

 

I've had the exact same thing happen to my BB. There's another user who has it far worse than both yours, and mine. You're not seeing things, and it is definitely changing. I have another copy I picked up cheap, and I am observing it to see if it changes as well. That said, this figure does come with mismatched plastic, but the phenomena of color changing is definitely happening to yours.
Look at my post, #2427, I am certain yours used to look like the example in my thread when new. WFC (Siege, ER & possibly Kingdom)figures YELLOWING quickly

On tab 117, WFC (Siege, ER & possibly Kingdom)figures YELLOWING quickly you'll see what happened to my original figures.

 

Sorry about another of my paranoia post's, has anyone checked their kingdom Red Alerts shoulders? I've been checking My Red Alert every now and then and the last time I checked his shoulder looked slightly. There's a high chance it's just mismatched plastic, but I just want to be sure.

 

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You know things are bad when even the YELLOW toys are yellowing.

My Tigatron now looks like he spend a decade in coffee grounds and cigarette butts.

 

Tigatron seems to be one of the worst offenders.

 

Is it bad to sell off a toy that's yellowing?

 

As long as it's disclosed in the sale, I don't see a problem with it if someone wants to pay for it and they know what they're getting.

 

I'm lowkey questioning my morals...

 

Taking pictures of yellowing and letting a potential buyer know — good!

Using stock photos or hiding yellowing parts in photography — bad!

 

Well I must be a good person because before I even had this conversation I did let someone know. They didn't even give a shit which shocked me honestly.

 

If Hasbro can so can you!

 

Maybe we should start posting where the general area you live, average temp, humidity, what type of lighting, ect

So maybe we can figure out some kind of common reason for the accelerated yellowing.

As the only figure I have with a hint of it is ss jazz on the shoulders l. Not even my tigertron which I got pre-owned is having issues.

 

Damn, I was so excited when that mold was announced. What a shame.

Now, we even lost the joke “oh no, my yellow Bumblebee is yellow” or “oh no, my yellow Cheetor is yellow”. They are affected by the yellowing issue too. Well it was funny while it last.

 

Metalhawk looks like a candidate for this, using the cyclonus mold and white parts where cyclonus yellowed

 

OK so I bought that Cyclonus that I posted earlier for $20. Gonna take some pics tomorrow and post the badge number. Hopefully it'll be fine

 

Maybe you can be the one to track Cyclonus' batch numbers  

 

So here is my Tigertron, batch F069612741

If he has yellowing, it's VERY minimal, think the hips are 1 shade darker than they should be but honestly could be my eyes and it's the stretchiest maybe ever.

Considering he is the worst offender, he is immaculate

 

It wouldn't be that hard either since I've been mentally obsessed over this shit lately...

 

So this one seems to be ok for the most part. Again its been there for like a year. The batch number is FO692 02901

 

Fors jhaxius yellwo?

yellow? Love cyclonus