I found a solution to get the white version of these icons onto a black menu bar. Jump on over to the Nocturne Menu Bar OS X by ~KillaAaron. Download and run the installer and when you get to the the "Installation Type" window, do not check any of the boxes.... after this continue the install and you will now have these modded menu bar icons, in white, on a black menu bar.
Which black menubar are you using if I may ask? I tried using the nocturne one, but I am not completely satisfied. Do those white icons then have little "shadows"? I don't know if that's just me, but they seem to be a bit blurry.