I am a bit confused on colors for the arrow packets and spell packets. What colors are acceptable for arrows and what colors are acceptable for spells?
As an addendum: I've played in numerous LARPs in which folks have made sure their packets were a unique color or pattern to distinguish them from other players' and NPC's. If you want to make sure you get (the majority of) your packets thrown at an event, pick a color you can easily distinguish from others'.