Particle Effect Help

im trying to use
this lib here for ParticleEffects http://bukkit.org/threads/1-8-particleeffect-v1-7.154406/

ive got it working but there is one issue when i set the material to wool and change the byte to 15 its still white wool not black any suggestions?

BlockData bd = new BlockData(Material.WOOL, (byte) 3);
ParticleEffect.BLOCK_CRACK.display(bd, 0, 0, 0, 10, 50, center, 30);