Kodachrome Test film

Here's that film of very early colour motion pictures I mentioned in class.

I'd like to know what you all think. The arbitrary choice of music gives it this ethereal quality, but what about the quality of the black in the image? The colour film, I think, gives the black a new depth. Where colourism in black and white motion pictures comes with tonality and grades of shading that can micro-shift in the movement of 24 fps, the introduction of colour, at least in this instance, removes the internal tonal complexity of black and turns it into a kind of void. In what space (that is, "whence") do these coloured figures exist?