NOTE: the latest version is 18.2.1
Types
TBD
HSLA where the Hue, Saturation, Lightness and Alpha 0..1.
HSLA where the Hue is 0..360, Saturation, Lightness and Alpha 0..1.
LCH where Luminance is 0..100, Chroma is 0..230, and Hue is 0..360.
TBD