Flamboyant paints are translucent coloured paints sprayed in a number of coats over a silver or gold base coat. There is no pearl in the flamboyant paint itself but the sparkle and light reflections come from the base coat which shines through the flamboyant top coat in daylight.
Polychromatic paints are “flatter” metallic paints, (a little like the underside of tin foil) they are metallic but have the tiniest sparkle/pearl flake in them which is visible on close inspection, a nice bright metallic paint for those who don't want too much sparkle. The Super Vigorelli frame pictured for the "Frames" section is Green Polychromatic.
Enamel paints are deep gloss paints, no sparkle in the paint, but a vibrant rich colour with a wide choice of colour options.
Pearl paints have a small metallic flake in the paint, not at all garish but a subtle sparkle in the paint itself giving depth and reflection, a fabulous looking paint in the sunshine. White Pearl is a white enamel base coat with a transparent pearlescent top coat.