I don't know if you can edit plugins.. But this one would be great for our server if we could adjust it slightly.
The only problem is that there are two ways of choosing the texture- one, by right clicking with a nether star that is permanently in players' inventories, and the other, by a command. Because the server is craftbukkit, it's just not feasible to have all players' #1 inventory slot taken by a nether star that is only useful for donators. We need this plugin but with that disabled or with the option to disable.
Again, not sure if you can do that, but that would be ideal.
skype: lucasfijibrandt
type of plugin: edited player particle effects
age: 18
server plans: when bukkit 1.8 comes out, we're updating/resetting world, introducing new features, and rebalancing the experience for players of all styles.