The word for today is…
amaranthine (adj) – 1. Of, relating to, or resembling an amaranth*.
2. Eternally beautiful and unfading; everlasting.
3. Deep purple-red.
*amaranth – Any of various annual plants of the genus Amaranthus having dense green or reddish clusters of tiny flowers and including weeds, ornamentals, and species cultivated for their edible leaves and seeds. Also called pigweed.
Source : The Free Dictionary
Etymology : Long ago poets conceived of a flower that did not fade and christened it amaranth. The appellation is rooted in the Greek word amarantos, meaning “immortal” or “unfading,” and amarantus, the Latin name of a flower (probably Celosia cristata). The word amaranthine emerged as an adjective of the imaginary flower and subsequently of anything possessing its undying quality. Amaranth also names a real plant (genus Amaranthus), an herb that some consider a weed and others grow for its colorful leaves and spikes of flowers.