I have a feeling that what's happening now, is just like what they did back in 2013, using a filter in the camera that gave the actors a weird looking color in their skin. This time the filter must be affecting the lip color on the male actors bc maybe they are using a darker color for the guys. Ironically is always pink for the girls, and it doesn't affect them that much.
Back in 2013 they started using a new camera that made the skin color look like they had a liver problem bc they looked yellow almost orangy in their skin color. My daughter who worked as a production assistant in a movie told me all male actors also wear heavy make up here in U.S. but they make sure it looks very natural. She laughed when I showed her how the actors look and can't understand why they don't correct what she also believes has to do with the camera.
I don't know why they can't see that this new dark color lips on male Asian actors looks terrible.