Your face opening is in sad mode is an apple green to Kelly green solar polish packed with iridescent and candy colored shifting flakes. Solar polishes require uv rays to change color. This particular color combination is subtle. You can not charge it to hold the color (like a glow in the dark. ) it only changes while in the sun and will revert to its resting color when not exposed to direct sunlight/uv rays. Most car and home windows and some nail polish top coats have UV blocking properties, these will dull the effect. Direct sunlight is best.