brindled
adjective
°of a brownish, tawny colour, with streaks or spots; streaky, spotted.
"1904: And there, in the middle of it was the man himself—his face twisted like a lost soul in torment, and his great brindled beard stuck upwards in his agony. — Arthur Conan Doyle, ‘The Adventure of Black Peter’ (Norton 2005, p.982)"