Hi Chip,
Here is the first page of 144 Do-335 pix
Do-335 Dunno if any Nachtjäger Pfeils are shown. Look around the site and there are other Nachtjäger types, too.
The Official Monogram Painting Guide to German Aircraft 1935-1945 tells that the change to the final official Nachtjäger scheme of overall RLM 76 Lichtblau with RLM 75 Grauviolett mottling took place in winter 42/43. Overall RLM 22 black was officially adopted in March 1941 and continued to appear until early ' 43.
The last nightfighter to reach service, HE-219's official factory scheme was overall 76 with tight 75 mottle. Lo, some were overall 22 with a mottle of RLM 02 Grau and 75. I am convinced this is the scheme of the sole surviving -219 at NASM:
My HE-219 Pix In ' 44 black reappeared though restricted to only the bottom of the right wing for quick ID by FLaK and searchlight crews.
Late war greens RLM 81-83 appeared on some planes. As of my book's printing and errata, these greens had not been conclusively identified via documentation as to what color is which, nor the proper name for the color;. "...the preponderance of evidence from all sources suggest that..." RLM 81 is known as Brunviolett (Dunkelgrun and Brunviolett by some aircraft companies), 82 as Hellgrun (and twice as Dunkelgrun [yep, same as 81!] by some aircraft companies), and 83 Dunkelgrun. "Hell" in Hellgrun = Bright Green.
The only late plane I found with 22 underside, aside from aforementioned HE-219, is the ME-262 B-1a/U1.
So what does this tiresome drivel have to do with your Nachtjäger Pfeil

That for what we know of prototype Nachtjägeren, these are the colors and exceptions; the ME-262 B-1a/U1 can be used as examples of what OKL may have been moving towards. Or you can extrapolate for Luftwaffe ' 46 and try something of your own creation

as per Flitzer's 13 part meisterwerk
Luft '46 Colours