ETYMOLOGY
from sable (black) + -ize
EXAMPLE
“…Some chroniclers that write of kingdom’s states,
Do so absurdly sableize my white
With maskes, and interludes, by day and night,
Bald may games, beare baytings, and poore orations,
Made to some prince, by some poore corporations. …”
From: The Scourge of Folly
By John Davies of Hereford, 1611
Lexicophilia 