brownify

verb3

1. •
   To make or become more brown.

   • We were all going to intermarry and brownify and hold hands and honor our essential human cousinhood – weren't we? — 2011
2. •
   To become brown due to increased levels of humic material.
3. •
   (informal) To cause to contain more racially 'brown' people, elements, or culture.

   • We are all going to intermarry and brownify and hold hands and honor our essential human cousinhood—weren't we? — 2012