How about something like this, which can be done in a different color for each open buffer:
Buffer Number 1:
(setq-local face-remapping-alist '( (stripe-highlight (:background "white" :foreground "black")))) Buffer Number 2:
(setq-local face-remapping-alist '( (stripe-highlight (:background "red" :foreground "black")))) Buffer Number 3:
(setq-local face-remapping-alist '( (stripe-highlight (:background "yellow" :foreground "black"))))