WHY IS THAT THE COLLINS HAVE 金牌 EYES AND EVERY BODY ELSE HAVE RED EYES

First of all, the family is the "Cullens" not the "Collins" and secondly, they are NOT the only 吸血鬼 with 金牌 eyes. The Denali clan also have 金牌 eyes. Why do they all have 金牌 eyes and not red? Because they don't drink human blood, they only feed from animals.

The Cullens' eyes are 金牌 because they drink animal blood instead of human blood.

CULLENS not collins,