Can Himalayan cat and white Persian Tom have black coloured kittens my cat has littered two white an

My Himalayan cat has littered black coloured kitten and two white while my male is white Persian is their anything to be worried for or the kittens are of my male cats

Short answer: yes. The white ones will either be pointed like their mama or will remain pure white like their daddy. The black ones are black because they got the mother's black gene (I assume she's seal point because it's most common) but not the pointed gene, or because the father is black under the white (white is a "masking" color that covers their genetic color). But if your female has had access to other males it is indeed possible for some kittens in a litter to have different fathers.

Do you know which are females and which are males?