Touch-up paint codes for Niner Gravel?

Am pulling my hair out looking for touch-up paint codes for a Niner gravel bike. I have contacted Niner who said they couldn't help me. I am pretty obsessive about the paint, so a perfect or close to perfect match is what I need. It is the black/red/grey from 2017, I believe. Any help would be appreciated. 

Andrew 

The bike colors in question: 
 

I once asked Joe Bell to provide touch up paint for his standard red bike color.  He said it is not possible to put the paint he sprays into a touch up bottle.  He recommended using standard nail polish in the closest color.

Thank you for the advice, Eric A. I assumed (wrongly) that Niner would keep track of the color pantone codes like Trek does! I'll see if I can match it up as close as I can. 

Erik_A wrote:I once asked Joe Bell to provide touch up paint for his standard red bike color.  He said it is not possible to put the paint he sprays into a touch up bottle.  He recommended using standard nail polish in the closest color.