TRYING BRAD MONDOS NEW X MONDO DARK BROWN SUPER GLOSS | WILL IT COVER GRAY HAIR?

I am testing out another Xmondo hair color! This this is the dark brown in shade 5N. This is his newest product it is a super gloss intensive glossing treatment. I tested it out on me and my brother, I really enjoyed this product I think it did a pretty good job covering the grays!