Gold, original NES Controller

[sworddude]

It was pretty obvious that it was a yellowed controller even you could have figured it out. Especially since in the bottom pictures and even around the edhes there are some grey spots.

If it truly were a gold controller you would not find any grey spots since i highly doubt they would have painted the controllers gold but made the plastic gold colour if it were a gold controller.

Also, that controller has definitly seen some better days and I'm not talking about the yellowing.

[Flashback2012]

Haha this is pure comedy gold... 

I too thought OP was funstering by posting this but apparently it was a serious post. Oops! 

[rayne315]

Yeah it's just yellowing from uv light. Most plastic used in electronics has bromine added as a flame retardant. The bromine reacts to the uv light, and voila! yellow consoles/controllers. If you're that concerned about it, Google retrobrite. It can be reversed, but it's quite the process and results vary.

im quoting this because it is the scientific answer.

I on the other hand also did not know nes controllers yellowed with age as I personally have NEVER seen one other than the on the OP posted. I will be sure to store my nes controllers now to avoid this reaction.