Tutankhamun died when he was a teenager and was buried in the Valley of the Kings.
The famous "Bent" pyramid is now open for visitors for the first time since 1965.
"I'm sad that so many people have become so angry," said Danish photographer Andreas Hvid.
Photographs show one sarcophagus painted with the image of a human in deep blue and ochre.
They may have used a tool similar to a sundial to find out the exact cardinal directions.
Archaeologists are hoping to find what lies beneath the large Mayan temple known as "The Castle."
Prior to the recent studies, writing ink was thought to be primarily carbon-based until the fourth and fifth centuries A.D.
Archaeologists are skeptical.