most contacts are not visible for people to see .when I wear contacts ,nobody can tell I am wearing them unless they know I wear glasses . I don't know how your contact lense are like , you may change another pair .
Colored contact lenses would make people look vivid and attractive. If you want to make your contact lenses less noticeable,you can wear the clear contact lenses which are invisible and people can hardly notice the contact lenses that you've worn.
Clear contact lenses can meet your need because clear contact lenses have no color and they are transparent just like you don't wear glasses at all.So wearing clear contact lenses is a good choice for you and people can hardly know you have worn contact lenses.