Rifle Brigade facings ca. 1864-8? And also officers' uniforms

[EnclavedMicrostate]

I've been having a hard time tracking down anything definitive. I've got some Perry BIF figures where I've cut down the rifles a bit and extended out the slings to approximate 2-band rifles, but I'm currently in a rut about facings, namely how much was black and how much green. Now, I'm assuming that the 1855/6 single-breasted tunic with the 'French' (? I'm getting the term from Prussian usage) cuffs were at least at some point used by Rifle regiments, but then that leaves the next question: Were the entire cuffs black, or just piped black, or was the flap black while the main cuff was green, or vice versa? Ditto for collars and shoulder straps.

This depiction of the Crimean uniform suggests black flap over green, green collars, and black shoulder straps (granted, the man depicted has epaulettes), but a) I don't know about accuracy, and b) I don't know about post-Crimea continuities.



This one suggests black facings in all the expected places: cuffs, collar, and shoulders.

https://www.facebook.com/7188464611/photos/a.10150439685644612/10159028317814612/?type=3

Simkin again seems to be showing the Crimean uniform with epaulettes, but the flaps are green with the rest of the facing areas black:



So, is there an answer or am I entitled to go purely off impressions and personal preference?

On a related note, all depictions of officers I've seen have shown a heavily laced, single-breasted pattern. Was there a green equivalent of the double-breasted frock coat, or am I likely to have to offer my soul to the Green Stuff gods again?