I agree it sounds like a bi-colour
Delgado is one too, here are some photos for reference:
Most bicolours have tan up their legs but very little to none on face or chest.
Sounds like he has tar heels, which are thick black marks up the back of their legs. Does he have pencil toes, which are black stripes on his toes?
Jasmine - Female Miniature Poodle - born Aug 15, 2010
Loker Delgado Von Stalworth - Male GSD - born Jan 26, 2012
Koda & Zazu - 5 year old male cats
Alex - Male Cocker Spaniel (rescue) - RIP Cuddlebug 2007-2010