Definition of "nighted"

Queen Gertrude: Good Hamlet, cast thy nighted colour off.

c. 1599–1602 (date written), William Shakespeare, “The Tragedie of Hamlet, Prince of Denmarke”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act I, scene ii]

To shake off the maddening and wearying limitations of time and space and natural law—to be linked with the vast outside—to come close to the nighted and abysmal secrets of the infinite and the ultimate—surely such a thing was worth the risk of one’s life, soul, and sanity!

1931, H. P. Lovecraft, chapter 5, in The Whisperer in Darkness