Returning value from function

[Heime]

I want the following function to return an indicator (Green or Amber).  How can 
this be done?

(defun txcomplt-light (featr)
  "DOCSTRING."

  (cond
   ((eq 'company featr)
       (if (equal 2 (aref recorder 0))
           (message "Light | Green")
         (message "Light | Amber")))

   ((eq 'corfu featr)
       (if (equal 2 (aref recorder 1))
           (message "Light | Green")
         (message "Light | Amber")))) )