Color Code

Hello,
My name is Michel, i'am french and i lived in the south of France at Nice
I have 2 Dax ST70 completely original one candy red 1974 K0 and a dark matte gray 1980 K3

This is a moment I'm looking for the color code of matt dark gray Dax.
Can not have the information, even in HONDA FRANCE
In a post wrote Waynus :
"Honda Dax ST 50/70
R-4C
RB-3C
G-31
YR-26
NH-45"
The firsts four code were sold in France from 1977 to 1981 but I wonder what the NH-45 ??

Can you help me ? Many thanks

'NH' is the prefix for black.
Don't know for sure if this is the type of grey/black you're looking for.
If the bike is still 100% original, you should find the colour code on your frame, below the seat.

Oh, I think this is one of the best looking, original Honda paints for this bike!