LED bulb PCB after failure

I have no idea how the PCB got this effect.

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Hot climate? Looks like it was baked in the sun for a year or so.
- Portugal. Not that hot in my town.
  
  And the bulb was inside the house the entire time. I was using it for my desk.
  
  Baked in it's own heat?
Looks like the coating above the traces didn't quite stand up to the heat over the years.

But it looks nice, maybe we can make PCB art with that.
- That might be it. I was thinking it could the a spike in voltage that shorted the traces. But nothing else got damaged in the house, so it is less likely.
The only thing that failed is the LED at 12 o’clock.
- How do you know when it fried?
  
  (ง •̀_•́)ง
That’s a pretty significant failure, Jesus.
- Yea, looks like over-volting damage. Maybe the voltage regulator failed. Just my guess
Triggers a weird kinda trypophobic response for me. Yech

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