My bottle just arrived. It's pretty sparkly and a nice dark fir green color in my Pilot Parallel 6mm.
Also, I shook like a mad woman before filling the converter, so that probably helped. As does the little ball bearing in the converter, which I give a good shake before I begin writing.
Edited to add:
I don't think the photo really catches the sparkle as even the fine lines are sparkly on this junky white paper. The metallic particulate seems to be showing up as white dots in the green, but does look both gold and silver in person, depending on the angle and thickness. I really like it.