Conniption Virtue
Conniption Virtue asked Lois McMaster Bujold:

Dear Lois, Myself and several people I showed it to) said "Parade red-and-blues!" (For people who haven't read those books yet, this is re: Barrayar/Vorkosigan.) They appear to be costumes for the the Visconti film 'Ludwig' set in 1864; I hope you enjoy the picture, plus I include an algorithm question mark? https://img-fotki.yandex.ru/get/6810/119319383.1c7/0_8e8e3_33f63b4e_XL.jpg

Lois McMaster Bujold
Fun!

For another visual source, the forest green uniforms in Branagh's Hamlet film are both exactly the right color and the right Ruritanian mode for some of the Barrayaran green uniforms, possibly modified by a touch of Soviet drab.

Ta, L,

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