TvH-
Totally.
Same concept for sure.So very crudely...
solid paints are straight pigments - they reflect light uniformly all over.
metallics are simply solids with powdered metal in various sizes etc - they reflect light dynamically based on the substrate contours.
pearls and colour changing flips etc are usually made with prismatic ceramic pearls and crystals. these reflect light dynamically and they also refract light dynamically from their internal surfaces. these dynamic changes are often so extreme that they can give the effect of colour changing paint but really what you're seeing is light travelling at different speeds.
One or two colour changes so for example green to purple is in the most part cheaper than a product that changes hue four or five times.
These effects are really difficult to photograph casually but here's a selection of premium samples...
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general_greyharbour
You might be right.