Duaric

Definitions and usage
Duaric is a juvelic term ment to describe the attraction from men to woman and vice-versa.

It is ment to replace heterosexual when describing a m/f relationship when the people involved may not be heterosexual.

This term was coined around February, 2018 by Aster (they/them) but a post from March, 2018 was made to explain misunderstandings.

Flags
There isn't any known meanings to the colors from the author (arco-pluris), but the flag is acknowledged by the creator as they use it on their site.