Color 6 Iridescence

Color week six I am thinking about iridescent color since my watercolor birds class is practicing Hummingbirds. We have watercolor tricks to create the look of iridescence and there are luminescent watercolors by Daniel Smith.

Why do those tiny Hummingbirds shimmer? Here is some recent research.

Here is info from Daniel Smith site …

Luminescent paints! The pigment includes mica, which are thin transparent particles coated with highly reflective metal oxides. When you paint with these watercolors, they’ll create a sense of depth and a sheen that changes with the angle of reflection and observation.
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