Steve, I'm not even vaguely an authority but nonetheless I remain unconvinced. There is simply too much evidence predating Ullmann's recent discovery of a single document. If you did mean VOL #1 it covers the years 1935 - 1940.
Ries (1963); Smith et al (1979); Merrick & Hitchcock (1980); Warnecke & Bohm (1998); and Ullmann in 2008 all show RLM 83 as DUNKLEGRUN and a perfectly good RLM 24 as Dunkleblau
This information is based on official paint samples, photographs, crash reports, comparative analysis with surviving aircraft, wreckage fragments, etc. (Smith and Creek, 1994, p.247; Smith and Gallaspy, 1977, pp.134, 136-137). Eagle Editions published a color paint chip chart utilizing material acquired from the late Ken Bokelman. In the preparation of his chart, they used as a reference a color paint card with a dark green paint sourced from Warnecke and Böhn archives that was identified as 83.
Work by researchers in Eastern Europe added important information, and hard data, regarding late-war colours (Poruba and Janda, 1997; Poruba and Mol, 2000). These researchers based much of their conclusions on four paint cards found at Prague-Rusin at the end of the war. Only two of these were identified on the back of each card: 76 and Nr.82. These matched exactly with other samples of these two colors. The other two cards were not identified, but again matched the known and accepted shades of 81 and 83.
Therefore, from what is known to date, the identity of color 83 is recognized and accepted as a dark green color. This is confirmed from various secondary sources, but most particularly primary sources such as the color paint cards from Warnecke and Böhn, and those recovered from Prague-Rusin which in both cases simply identified the color as 83.