Particles of every bow can now be changed. Check the particle list in the main ressource page! Some of the particles are colorables. You can change their color by placing ":" after the particle name, followed by the RGB color. For instance, "REDSTONE:255,0,255" stands for purple redstone particles.
There is now a parameter to disable arrow particle effects.
Don't forget to re-create bows.yml and config.yml! I know it's annoying, but I wanted to make a quick update as the last one was 2 weeks ago. I've already figured out a way to add an "automatic parameter generator" whenever you update the plugin, I'll certainly add it in the next update (more bows coming soon ).