A rose-tinted vision of the world means that they see the world through rose-colored glasses and it is reassuring because it is a positive view of the world.
Consider the staetement "They win their parents over with an optimistic vision of the world which is decidedly reassuring .". Based on this statement, is "They win their parents over with a rose-tinted vision of the world which is decidedly reassuring ." a true statement? Yes/no/unknown