How To

How To Set Colors for Priorities in Org Mode

Customize org-priority-faces to set specific attributes for each priority:

'((65 :foreground "red" )
  (66 :foreground "orage")
  (67 :foreground "blue"))

The numbers 65, 66 and 67 correspond to the priority letters in ASCII e.g. 65 is A. This can be also written as ?A in Emacs Lisp.