This basically...The "glitch" basically just puts the color of your offhand item for the throw.
I use it as a means of distraction all the time. In PvP my jug uses copper, but my buddie's tank jug uses red...so my generator uses a red crystals o when I throw my lightsaber it looks like he did it. You would be surprised how many people turn and attack him after I throw a "red" saber at them.
That's cool, I was thinking about switching colors to see if that's what it was. Good to know.