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

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

CULLENS not collins,