Special hilighting for comments

[Heime <heimeborgia@protonmail.com>]

I have seen that emacs-lisp-mode allows the highlighting of some specially formatted comments using strings enclosed by single quotes 'this-thing'.  This can be very useful beyond its intended use (highlighting function and variable names).  

For instance, I can use this to highlight the first comment with a different colour from the rest of the comments. 

But this special highlighting only works for function and variables names without spaces.  

So I cannot do the following to get 'A Remark here' highlighted in a different colour.

;; 'A Remark here'   
;; Some comment here
;; Another comment here
;; You are a hero

Can the use of '' be extended so I can use the highlighting more generally as described.  Or perhaps have an additional highlighting for more general things, separate from function and variable names.