It is always recommended that you see an eye care provider for having lenses fit. Recently a new law passed making buying even the cosmetic non prescription
contacts without seeing a doctor illegal. This is done to help protect your eyes from the myraid of complications that can occur from improper wear and care of lenses.
BTW jamesbond if you are wearing
Acuvue lenses than you should be able to just order the colored accuvue. Give your dopctor a call and ask if you can order accuvue colors.