You cannot possibly be serious. What if he is? It's not a disease, so you can't cure it. As a parent, you must love him unconditionally and help him be his own person. You don't have to like his homosexuality, but he's not your property; he's not yours to control. The Universe has trusted you with him to raise him and care for him; nothing more. It should not matter to you if he is gay or straight or transgendered or bisexual, except to help him adjust, accept himself for who he is, and love and support him especially when he needs you the most.
And I don't understand what blue eyes has to do with anything. Care to elaborate?