Cut to a macro shot of the inner display. We see pixels allocated meticulously into their space.
Suddenly, a wave of colors fills each pixel.
There are two possibilities for this particular scene: the first is a complete CGI scene and the second is to use a practical special effect.
This effect ( I suggest to have a realistic and amazing effect ) would be possible using a carpet of small water balls ( the water balls sold as plant fertilizer ) squeezed between thin glass plates and lit by LED panels.