And as he snarled the phrase under his breath he gestured anew bringing to the sky a flash more blinding than either which had come before. For full three seconds I could glimpse that pandemoniac sight, and in those seconds I saw a vista which will ever afterward torment me in dreams. I saw the heavens verminous with strange flying things, and beneath them a hellish black city of giant stone terraces with impious pyramids flung savagely to the moon, and devil-lights burning from unnumbered windows. And swarming loathsomely on aerial galleries I saw the yellow, squint-eyed people of that city, robed horribly in orange and red, and dancing insanely to the pounding of fevered kettle-drums, the clatter of obscene crotala, and the maniacal moaning of muted horns whose ceaseless dirges rose and fell undulantly like the wave of an unhallowed ocean of bitumen.
This was clearly a vision of the South African World Cup that has recently finished! (Soccer to the non-Anglophiles among you)
HPL was clearly referring to the vuvuzelas that were played by fans in an unceasing tuneless dirge through every single game.
http://en.wikipedia.org/wiki/VuvuzelaMany fans were "robed horribly" in various bright colours. The Dutch fans (or maybe that should read: The
Dutch fans!) always wear bright orange
