I'll list things here as I remember them... Most of this stuff I had written down on my old laptop, and then it died, so I'm recompiling it as I go.
Firstly, dragons are not color-coded. For those of you new to thing DnD thing, in a typical setting, a red dragon is usually evil, and it breathes fire. Not necessarily true in the Arius setting. It may be good, or neutral, and it may or may not actually breathe fire. It may breathe a cloud of acid instead, or possibly shoot bolts of electricity.
An optional component I am also considering implementing is the idea of distanced alignment, which would basically translate to detect good/evil spells not working, and paladins detecting Chaos instead of Evil. Clerics would not have to be within one step of their deity, either. PM me your opinions. If I don't hear any complaints, I'll add this rule before gamestart.