RATIO_8_TO_5_BIT
uint16 r16 = uint16(color.red * RATIO_8_TO_5_BIT);
uint16 g16 = uint16(color.green * RATIO_8_TO_5_BIT);
uint16 b16 = uint16(color.blue * RATIO_8_TO_5_BIT);
uint16 r16 = uint16(color.red * RATIO_8_TO_5_BIT);
uint16 b16 = uint16(color.blue * RATIO_8_TO_5_BIT);