GR translation: the rainbow edges of what is almost on him

[Mike Jing]

V203.11-22, P205.32-206.3   Why here? Why should the rainbow edges of
what is almost on him be rippling most intense here in this amply
coded room? say why should walking in here be almost the same as
entering the Forbidden itself—here are the same long rooms, rooms of
old paralysis and evil distillery, of condensations and residues you
are afraid to smell from forgotten corruptions, rooms full of upright
gray-feathered statues with wings spread, indistinct faces in
dust—rooms full of dust that will cloud the shapes of inhabitants
around the corners or deeper inside, that will settle on their black
formal lapels, that will soften to sugar the white faces, white shirt
fronts, gems and gowns, white hands that move too quickly to be seen .
. . what game do They deal? What passes are these, so blurred, so old
and perfect?

What does "on him" mean exactly here?
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Pynchon-l / http://www.waste.org/mail/?list=pynchon-l