― I just received OPI Every Month is Oktoberfest from the Germany collection. ∙ I used it, and instantly fell in love with it. I'm positive that this is going to be my go-to nail color this fall and possibly even this winter as well. ∙ Let me start off by saying, this is my very first OPI nail polish, and they've already won me over. The formula is amazing, completely opaque in two coats, but definitely wearable after one. It has a wide brush, which is what I prefer, and are harder [...].