The motive behind the switch was a film called The Holy Mountain. There is a scene where the main character encounters an alchemist while trying to steal gold from his tower, the alchemist says if he wants gold, he is able to give him some. He has the thief(main character) shit in a glass container and through a(presumably alchemical) process, he turns the feces into a nugget of gold. After which he says "You are excrement, you too can become gold". The word oro means gold in Spanish. Also it was short and I kept the zeros from my old name.
TL;DR - It means gold in Spanish and I kept the zeros from albo0bo0.