Preview 3
Green, lime, mint, and teal witch hats
Preview 4
Cyan, blue, and dark blue witch hats
Preview 2
Candy red, red, orange, and yellow witch hats
On mobs 3
Witch (not wearing a hat) compared to mobs wearing the witch hats
Preview 5
Purple, violent/magenta, and pink witch hats
Preview 1
Plain (left) witch hat and gray (right) witch hat
On mobs 2
Piglins wearing witch hats
On mobs 1
Various mobs wearing witch hats
Obtaining
Renaming a carved pumpkin in an anvil changes it to a witch hat