i mentioned way back in this post that i'd found a polish very close to the infamous "Opulent Cloud". i finally did a comparison of the two:
both polishes are lavender-leaning silvers with golden iridescence. "Opulent Cloud" is lighter and more golden than "Vancouver", but "Vancouver" is more opaque and could have sufficed with 2 coats. i have no idea how old "Vancouver" is as i'd never seen Seche POLISH before i purchased it in that nail supply store, but i guess this means that "Opulent Cloud" wasn't so original after all!