The always interesting Public Domain Review has a post about a striking medieval manuscript:

As the seventh, final seal is opened during the Book of Revelation, unlocking the scroll that John of Patmos envisions in God’s right hand, a silence breaks out in heaven for half an hour. For centuries, artists have avoided depicting this apocalyptic caesura by focusing instead on the action-packed aftermath: thunder and lightning, the seven trumpets, hail and fire mingled with blood. From John Martin’s 1837 mezzotint of cataclysmic crags above turbulent seas back to Albrecht Dürer’s noisy 1511 woodcut of flames engulfing life like tinder, the “silence in heaven about the space of half an hour” is absent, implied only apophatically, as the converse of the chaos that now reigns over, and rains down upon, the earth.

This is not the case for a miniature from the twelfth-century Silos Apocalypse (British Library Add MS 11695, fol. 125v), a codex copy of the Tractatus de Apocalipsin, eighth-century Spanish theologian Beatus of Liébana’s commentary on the Book of Revelation. Here sonic absence is visualized, and it is yellow. Just as silence blankets the ears, in this manuscript, a monochromatic rectangle “serves as an effective screen that blocks the beholder’s gaze”, writes art historian Elina Gertsman. Auditory interruption gets transposed onto the textual plane, as the rectangle veils the ruled lines it floats above. “It’s not that yellow as a color ‘stands for’ silence according to medieval symbolic logic”, argues scholar Vincent Debiais, “it’s that the colored area on the page opens a visual moment, a space of silence within the manuscript itself.” The effect becomes all the more palpable when we consider that the manuscript may have been read aloud.

It can be tempting, despite scholarly reservations, to view this yellow silence as an early precursor to the color field abstractions and monochromatic paintings that preoccupied the mid-twentieth century. Rather than claiming that the Silos Apocalypse prefigures works like Mark Rothko’s Orange and Yellow (1956) or Yves Klein’s “Untitled Yellow Monochrome” (1956), it would be more productive (and interesting) to ask how those modern investigators of the chromosphere approached a type of representation that converged with medieval forms of contemplation. As Debiais writes, “It’s important to challenge the common idea of an almost evolutionary procession, where modernist abstract art is somehow the climax, a new and perfectly original approach to the visual world, absolutely different from all that preceded it.”

Links and (of course) an image of the miniature itself at the PDR post. The Wikipedia article on Beatus of Liébana’s work has Commentaria in Apocalypsin, which strikes me as better Latin than “de Apocalipsin,” but I Am Not a Latinist.