its red beards you are seeing for real, it is what it is. It's henna-dyed. Its not a new thing na, it's very common in sunni Islamic countries. They are trying to follow the footsteps of the Prophet of Islam for it was reported that starting after the age of 40, he began to dye his greying beard red to gain a more youthful appearance as Prophet Mohammed himself had NATURALLY red hair when he was young.