When I say you encounter a Troll, do I have to explain what hair, eye, skin color they are? NO.
When I say you encounter a Dwarf, do I have to explain what hair, eye, skin color they are? NO.
When I say you encounter an Orc, do I have to explain what hair, eye, skin color they are? NO.
When I say you encounter a Human, do I have to explain what hair, eye, skin color they are? NO.
When I say you encounter a Zebra, do I have to explain what hair, eye, skin color they are? NO.
When I say you encounter a boulder blocking the trail, do I have to explain its color? NO.
Do I have to explain what color the road you are on? NO.
If it is a dirt or stone or concrete road, then yes it ADDS to the story.
If you are on the Yellow Brink Road in Oz, then yes it ADDS to the story.
As it is unique, I will have notes about the size of the average brink, etc.
So to nick-pick about such menial things is a waste of time, to both the DM and the other players. Do I need to explain then also if an NPC had their nails are clipped or not, painted or not and if so what color.
Does it ADD to the story or campaign? NO.
If a monster has it clipped and/or painted, then it is unusual and worth noting.
Otherwise, NO.
If a player decides they want to use a mini that is left unpainted, or one that is painted makes NO DIFFERENCE to the game.
If a mini is painted, what color you make the clothes, hair, pants, boots, etc. makes absolutely NO DIFFERENCE to the game.
If a mini is made of plastic or pewter, or if we use a dice or coin to represent someone, makes absolutely NO DIFFERENCE to the game.
My high school group was a mixed group (ethnic, religion, sex, age, political ideology). We NEVER used a term other than HUMAN to describe a HUMAN. We did not need to. Everyone knew what a HUMAN is.
To say it does, is sad. It shows someone is BIASED. It shows the character and role playing of a PC or NPC is secondary.
To smacks of RACISM if the color is more important, IMO.