How long have they been there? Do you have any other discoloration any where else on your foreskin or the head / glans of your penis?
They appear to me 2 months ago and some white dots are also there at the bottom of glan.
And they don’t itch or pain, they are just there.
it looks like something Fungal,
Have you had this checked by a Medical Professional - you may best benefit from a visit to a Dermatologist …
did you ever get checked by the doc??? what was the result??