When using a custom fon2/lmp smallfont ( a non-composite smallfont), any untranslated text in the options menu seemingly has its color randomly assigned when you start gzdoom.
I have three examples of this:



The labels are all set to untranslated, as they always are unless you replace them in MAPINFO.
I have tried this with several different smallfonts. I don't feel comfortable attaching them to this post, as I don't want to distribute them without the author's consent, but the fonts I've tried are Apostasy, Enlightening Small, Miniplicity, and Status Report, which are all on Realm667's repository.
This also only appears to happen if you use a custom smallfont. I've tried it with bigfont replacers under the same conditions, and they don't mess with it.