This is Spoiled Cougar Attack:
(And yes, I'm aware that "Cougar Attack" is a pretty dumb name for a polish, but the polish is awesome so I ignore the name issue.)
You can see in the picture above that Pumpkin Spice doesn't look much like Cougar Attack either in the bottle (which is the one partly visible on the left) or on the nail (which is the one above CA on the wheel) - however, they come out looking surprisingly alike on the nail, if you're willing to use up enough of the bottle of Pumpkin Spice putting on enough layers to get it tolerably opaque. This is basically how I went though the first bottle so fast, and I'm not going to make that mistake again.
This is my old bottle of Cougar Attack and one of my new ones:
back here, and Cougar Attack can become my go-to coppery glitter once again.
Added: Just because I have it, a picture of the label: