yes most def! bitter is meon yellow-greenish, and is not sheer at all, and metamorph is apple green and can be used both sheer and bold! and it's not as gold as juxt.
plum is a frosty, all the e/s from madame B are, and it's like parfait amour, only more grey!
I didn't know berlin had a pro-store, are you sure it isn't just a freestanding store? In the netherlands we have a freestanding store as well, and it has some prostuff (stuff you can't find at a counter) but they do not ave the all the pro-products like pigments