I remember blue blockers, they were the sunglasses you could buy that blocked the color blue with yellow tinted lenses. They made your eyes relax but finding a blue car was impossible.All I can think of regarding "plasticity" is this:
Optical plasticity in fish lenses - ScienceDirect
As for vivid colors, CRI (stands for Color Rendering Index) is important for accurate image rendering. Some lens coatings block certain light frequencies, which will degrade color rendering accuracy. I can only assume they mean that their lenses are less prone to inaccurately transmitting color to the eye? You usually hear CRI discussed with lighting, but it can also be impacted by intermediate media, such as lenses and filters in optical instruments.
Color rendering index - Wikipedia
Neutrally vivid colors sounds like an oxymoron to me like governmental assistance.