> Plus there's zero direct evidence for their colours
This is no longer true! Starting with Sinosauropteryx in 2010, paleontologists have identified what they believe to be fossilized melanin-containing organelles. These organelles, called melanosomes, have different shapes depending on which color they produce, and those shapes are preserved well enough to be visible under an electron microscope.
This is no longer true! Starting with Sinosauropteryx in 2010, paleontologists have identified what they believe to be fossilized melanin-containing organelles. These organelles, called melanosomes, have different shapes depending on which color they produce, and those shapes are preserved well enough to be visible under an electron microscope.