;; append this to your .emacs
(copy-face 'font-lock-function-name-face 'brian-foo-number-face)
(set-face-foreground 'brian-foo-number-face "blue")
;; end append this to your .emacs

;; begin some code from your major mode
(unless (boundp 'brian-foo-number-face)
    (setq brian-foo-number-face font-lock-function-name-face))
(defvar foo-mode-font-lock-keywords
    '(("^KEYWD .? FOO \\(.? .? .?\\)" 1 brian-foo-number-face)
      ("^KEYWD .? BAR \\(.? .? .? .?\\)" 1 brian-foo-number-face)
      ("^KEYWD .? BAZ \\(.? .? .? .? .?\\) 1 brian-foo-number-face)))
;; end some code from your major mode