My prompt to GROK:
Got a uniform/image question. Knuckleduster Miniatures now has stls of "Hollywood cavalry" figures which are pretty clearly based on the John Ford "cavalry trilogy" films. So it is acknowledged up front that strict historical accuracy is not the priority. So the answer to the question I am about to pose may well be "they decided it would look good on the big screen." But as I am preparing to paint a bunch of troopers, I notice details like the neckerchiefs and the hats. The kerchiefs seem to be about 50/50 red or yellow, within the same unit. and the hats about 50/50 black or whitish. Is there any reason to this sort-of variety?
Yes, the 50/50 mix of red vs. yellow neckerchiefs (and black vs. whitish hats) in the Knuckleduster "Hollywood Cavalry" STLs is almost entirely a deliberate cinematic choice for visual punch and variety on screen—exactly as you suspected. John Ford's cavalry trilogy (Fort Apache 1948, She Wore a Yellow Ribbon 1949, Rio Grande 1950) is the direct source, and the minis faithfully replicate that "uniform that never existed except in the classic Western movies" look that Knuckleduster themselves advertise.
Why the neckerchief variety?
Film logic: Yellow became the iconic "cavalry color" largely because of She Wore a Yellow Ribbon (the only color film in the trilogy) and because it matched the branch trim on trousers/chevrons. But Ford's costumers deliberately mixed in red (and sometimes blue or faded cravats) within the same unit for contrast, depth, and to keep group shots from looking monotonous. Forum discussions of the films note "different colored neckerchiefs (red and blue) for variety" and "ratty looking…cravats on the veteran characters" as pure artistry. Ford famously ignored historical advisors with a growl along the lines of "Well, they should have" dressed like that.
Historical echo (but not the driver): Real post-Civil War troopers bought their own bandanas from sutlers for dust on the march. Colors were whatever was available—red was very common, white/blue/checkered also popular; yellow was not regulation or especially common. So the minis' mix is Hollywood exaggeration, but it coincidentally captures the real non-uniform field look better than a solid-color unit would.
Why the hat variety?
Film logic: Black campaign/slouch hats for the "classic" silhouette, but whitish/lightened ones mixed in to show weathering, sun-bleaching, or campaign use. It adds visual texture in long shots and makes individual troopers easier to pick out.
Historical echo: Post-1865 campaign hats started dark (navy blue/black felt), but by the mid-1870s many units (including the 5th Cavalry that Ford drew from) were documented wearing light-colored or tan versions. Supply was spotty, hats got dusty/bleached/straw substitutes in the field. Again, the minis' 50/50 split is Hollywood flair that accidentally mirrors real frontier irregularity.