Delatour's portrait of Poisson differ from the other portraits because his other portraits were Voltair Rousseau and Louis xv and unlike them pompadour was a women. I hope my answer has come to your help. God bless and have a nice day ahead! Fee free to ask more questions.
i believe it is a tint or shade
In the lascaux cave paintings the animals as well as human figures would differ as the animals are more of a realistically drawn rather than the humans. Hope this would be of big help and this is the right answer.
