This is the yarn I am using for the second half of Justice's vest. Photographed in the very bright incandescent light of my bedroom.
That's not grey. And it's not Prussian blue. What it is, is darkest navy, almost midnight blue. So I guess I may be forgiven for thinking it was black. And it will still look wonderful with the dark green of the first vest half.
And now if you will excuse me, I have knitting to do.