Elizabeth line testing ways of banishing its “ghosts in the walls”

The appearance of shadowy ghosts has plagued some of the Elizabeth line’s central London stations, and now TfL is trying to banish them.The shadows are appearing behind the seats on the platforms where people are leaning up against the walls and thanks to their appearance, have been nicknamed by some as ghosts.
They are starting to look shabby though, so TfL is trying out an idea to see if it can help reduce the effect or even eradicate it entirely.
One would be to replace all the seats wi