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Try magic eraser. That works on a lot of surface and Tesla sales gal told me if I ever get anything on the white seats to use it. She used it and works.
Use a small bit of WD40 on a microfiber cloth. Rub gently. Worked well for blue pen stains on my Ferrari F355 seat. A co-worker asked to sit in the car and forgot they had a pen in his back pocket. An upholsterer told me about this trick. After removal of stain, lightly dampen a potion of the microfiber with water to remove WD40 from seat. Use leather cleaner (like Leather Honey) on entire seat to help protect and keep clean.
Ok, this method works!