This is probably old news to some, but when I was at Disneyland yesterday (waiting in line for Dumbo), I noticed that Dumbo #14 is no longer gold. After we sat down, I aked a CM when that happened and he said it was pretty recently, like after Labor Day.
At our next stop, Casey Jr, a CM there confirmed that all the Golden Vehicles were gone or going soon and he was glad for it. He said it was such a huge pain for him and the other CM's to try to keep guests happy when there is only ONE golden Dumbo, carrousel horse, etc. Some guests just stayed in line for several turns to get the gold vehicle and a few even offered bribes to the CM's manning the attraction. (Side Note: Casey Jr. itself is gold and not scheduled to be repainted until the next refurb shutdown in Dec. or thereabouts)
The photo-op golden vehicles are still in place, next to the attractions themselves, but they may be gone soon as well.
Looks like Disneyland is winding down the longest Birthday Bash in recorded history.