I just got my first rifle, just a .22, so i can shoot without going broke. lol... so i decided to get my first scope. Its a Bushnell scope, just a cheap one, and it has these covers that go over each end of the scope and are attached to eachother by elastic. one of the caps has a clear lense but the other one has a kind of yellow tinted lense. Anyways i was just wondering what purpose that serves and if the tinted or clear side is supposed to be on a certain end of the scope.