Why do the colours on your computer screen become distorted when you apply pressure to the screen?

When using LCD( liquified crystal display, there's a sheet of liquid crystals in between a bunch of other screens and filters, and behind all of that is light. When you apply an electric charge to liquid crystals, you can change their shape, and when that happens the direction & colour of the light as it passes through can be changed.

But you can also change the shape by pressing them through filters. Because this is much less precise than you can get with an electric current, it sort of warps into a blob of colours instead of a coherent image. When you remove pressure, the electrical current takes back control and forces the liquid crystals into the correct shape again.

Its hard to predict the colors since you have to take into account the previous configuration of the liquid crystals, the amount of pressure you're putting on them, the location of the pressure and the type of light and filters used in the display. So it usually just creates a strange gray sort of colour.

Aaaandddd this information is completely random n possibly uselessss/
Peace.