i have found this to be true as well. i have what you could think of as the opposite of autism, something like a hypersensitivity to people.  redheads with dark pits for eyes are generally evil people. sometimes they have light brown eyes, in these cases if there is a black ring around the outside of their iris they are still evil, but if they do not have this and it is just light brown then they are ok. you will also notice the black ring effect in other white people now that i have mentioned it, with lighter eye colors like green, hazel and blue. you can see it in this photo of steve huffman, who is friends with gishlaine maxwell, jewish, has eaten human flesh and is also in charge of reddit and bears much of the responsibility for the 2020 blm/antifa terrorist riots. even some old traditional beliefs from places like south asia line up with this. i have had a couple (fresh off boat) philippine people mention to me that they can tell i am not a bad person because my "eyes are clear." there are little tidbits of wisdom related to this phenomenon scattered all over the world.
Canada