You can now choose one of the supported Spigot sounds which can be found on this page: https://hub.spigotmc.org/javadocs/bukkit/org/bukkit/Sound.html

IMPORTANT:
If you don't want to reset your config you can simply add this to your config.yaml.
The example config.yaml will also be updated.

I also added RGB support for your customized messages. You can simply use `&{symbol}` to colorize your messages as you'd like to.