I'm sorry, but I have to hold my congrats until you guys down Soa on hardmode or nightmare. Soa is a step above the first droid boss, which is a step above Gharj, which are many, many steps above the puzzle boss and 1v1 boss. Also, I don't think anyone, not even AoD, have managed to down Soa on hardmode or nightmare in either size.

The colors are on a set circle. Yellow-White-Purple-Red-Green-Blue. You have to complete both pillars at the same time (or as close as you can).