You can go to the place where you got them done and ask them to take them off. Or you can use a spare fake nail and wiggle it underneath the acrylic and it should pop off. Another way you can grow your nails out and clip off the acrylic nail with nail clippers as your nail grows.
i dont know, but it could be Robe if you havent tried it yer?
Edit: wait, nevermind, sry
Generally,the vitrage,or stained glass technique was used to convey an idea of other worldliness. When a person would enter the cathedral,the light would shine through the windows and illuminate the interior,causing a colourful ambient that would leave the person feeling as though they had entered another world;the world of God. The principle in the Byzantine age was the same,except it was more so to signify the god like attributes of the rulers themselves.