Hi, sorry this is not related to Arma 3 itsel.
Text-shadow: I really think there's too much text-shadow used; I've a hard time reding all the shadowed text. It would be nice if just normal text would be used (like in the commends and such).
Contrast (see screenshot): the contrast really falls from very dark to very bright. I would find it more pleasant if you used colors which more related to each other. {F16737} {F16738}