Both polishes are virtually the same colour (I'm almost 100% certain they are the same colour), I compared them on a sheet. I would never do a nail comparison with them as the difference would be so clear. Greenberry is a careful 1 coater, Green Room is minimum 5 coats and it's not even opaque (I was very disappointed the 1st time I tried it). Green Room will forever be my green jelly.
Glitter: OPI - Minnie Style
The white square is peaking out on my ring finger and I like that.
Dark Pink: Barry M - Fuchsia
Metallic Pink: Barry M - Boots Xmas LE 2012 B (really opaque :))
Purple: Illamasqua - Jo'Mina
Dark Purple: OPI - Plum And Get It
Thank you for reading and I hope you have a nice day!! :)