i'm ready to start building up my new track frame that has a white/black color scheme. (pics)

i'd like to find all black components if possible, but not seeing many options for threaded stem/bar combos.
(i'm trying to keep it threaded since it's a vintage frame)
the only track drops i've found in black are the Deda Pista... but they have a clamp diameter of 31.7 and i can't find any black threaded (quill) stems that fit.

any suggestions?