Post-Rubor, meaning after blush in Latin, is an a-spec identity where one feels attraction quickly but it soon fades after the excitement of having attraction disappears. As long as one is excited about having the attraction, they will experience it, but as soon as the feeling fades so does the attraction.
This identity also falls under the abrosexual label.
The lighter colors fading into darker colors represent the feelings slowly fading. The dark grey signifies lack of attraction.
The alternative flag was made by Fandom user WasabiBuns on July 7th, 2021. The red represents attraction or suddenly falling in love. It fades to gray, representing losing interest and eventually to black, which represents feeling no attraction.