Re: coloured contacts
My colored contacts are for fashion only (i.e. no presciption on them), and I wear them to parties or if they match what I'm wearing. But for me it was hard to keep them on for long periods of time. My eyes would get really really red and dry towards the end of the day. Also, I had trouble seeing with the contacts on at night. The color was really pretty though--I used the Honey colored contacts.
Give them a try, and see how you like them. You may love 'em, or you may not--it really depends on the person.