WHY IS THAT THE COLLINS HAVE سونا 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 vampires with سونا eyes. The Denali clan also have سونا eyes. Why do they all have سونا eyes and not red? Because they don't drink human blood, they only feed from animals.

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

CULLENS not collins,