Some in­ter­est­ing things can be done with colour fonts. Bixa was orig­i­nally de­signed as wood type for let­ter­press, and is now trans­formed into a mul­ti­color font for web. The spec­i­men suf­fers slightly in the same way spec­i­mens for vari­able fonts do: they have to ex­plain the ben­e­fits and fea­tures ahead of the ac­tual de­sign. That said, this is an in­ter­est­ing spec­i­men.