Our coyotes (PA) go from standard color to anything you can imagine. I saw a big yellow one when I was deer hunting once. Years back some guys caught black ones, red ones, yellow ones, whatever. The biologists claim they are not dog mixes and they might be right. Every coyote I ever saw had yellow eyes. Never saw a dog with yellow eyes. 60-70 pounds is not that unusual around here. You did good. Go get some more.