OPI Designer... de Better! (Muppet Collection '11) is neither a gold nor a silver. From far away it looks like a silver, but as you look closer you can see flecks of copper tones in it. The pigmentation is fantastic and it provides great coverage. One of my favorite nail polishes of the year.
Sally Hansen Gem Crush Nail Color in 03 Big Money (on my ring finger) is a gorgeous champagne glitter polish - To be exact, there are small champagne glitters mixed up with big purple glitters in it, but they look like a champagne nail color from far away. It doesn't provide as much coverage, so I applied 3 coats. Also, they don't necessarily last for a long time (1-2 days), but I love this polish because it's so pretty :).