Definitely not Partridge. I don't know what you call it in American Gamefowl, but they appear to be "Lemon Blue" (blue based brown-red) or just a cross of Blue and Duckwing.
No, I know, those are pretty uniformly "blue" and shiny, almost like a Self-Blue/Lavender, but the brown on the neck is too dark for that. . . So I'm still guessing either Duckwing x Blue or Blue Duckwing w/columbian, which, is rare in Gamefowl.