Circa the time of the Crimean War in 1854, Colour-Sergeants of some Rifle Regiments wore the insignia of a Colour-Sergeant on the right arm and three chevrons on their right arm.
At the time the Colour-Sergeants' badge was not as represented in Zulu Dawn in the Rifle Regiment mentioned above it was single gold chevron surmounted by a wreathed crown, crossed swords and a rifle 'hunting horn'.
The Royal Marine Light Infantry Colour-Sergeants wore an even more elaborate device in Full-Dress which included mermaids!
Line regiments were different again: colour badge on tunic consisting of one bar of double gold lace surmounted by a device representing a union flag, embroidered in silk, and cross-swords in silver.
Personally I think whoever advised on the uniforms on Zulu Dawn made an error, and may well have been influenced by an earlier uniform.
But that's just my opinion.