I did a little digging around and found this info;
Controversy The Fact: Code F6, Bright Green Metallic for Dodge A- and B-Bodies was first mentioned in TSB D69-23-9, dated November 27, 1968. Some sources claimed that Code 97 Rallye Green is also F6 Bright Green Metallic, but the PPG/Ditzler paint numbers are different: 2103 (F6-Bright Green Metallic) and 44032 (97-Rallye Green). The numbers from Ditzler prove that Rallye Green and Bright Green Metallic were different. Additionally, a Chrysler-issued bulletin dated January 22, 1969, listed Ditzler #43898-Rallye Green for '69 Plymouth B-Bodies (Code 99). This is the same number as the catalogued '68 Chevrolet color of Rallye Green Metallic!
As it turns out, through 1968 Ditzler used a five-digit number to identify paint colors. Typically, Ditzler used the numeral "4" as a prefix for green hues. Beginning in 1969, Ditzler went to a four-digit numbering system; however, some five-digit catalog numbers were carried over. The catalog number "2103"-for F6 Bright Green Metallic-was issued during the '69 model year-and no sooner-for '69 Dodge A- and B-Bodies. The code "44032"-Code 97 Rallye Green-was the highest five digit number Ditzler issued for passenger car applications. It was assigned to give Chrysler a specific factory application number in the Ditzler paint books. Ditzler code "43898" is currently cataloged for '68-'69 Chevrolets only.
The actual formula used to create Rallye Green for Plymouth in 1969 was the same formula used for the 1968 Chevrolet-Rallye Green Metallic.
This was not the only time a Chrysler product wore General Motors paint-the '70 Chrysler 300-Hurst's Sauterne Gold Iridescent accents were taken from the '70 Cadillac palette.
Hope this helps,
Dallas