My ultra thin Sharpies are used…..
I eventually got round to playing around with a regimental and colonel’s colours.
It took a bit of trial and effort to get the correct combination. some looked wrong, other colours just disappeared next to the black as seen below. I am using Sharpies to colour them as this speeds up the job no end.
What I might do once they are finished is to copy them and see what they look like on a colour printer.