A heap of broken images

Since when it is not heap if all grains but one are taken away, one by one in order to prove the Sorites paradox and then you make a heap else where.

 We have this heap of broken images of the glass pieces in the kaleidoscope where their shadows change colours as we rotate the scope in our fingers.

If we remove all but one glass splinter will it still be a heap of coloured shadows? At what point will the heap cease to exist when we dismantle kaleidoscope’s walls?