What about :results code
The default is a elisp code block so you get syntax coloring

That works fore lisp:

  #+begin_src elisp :results code
(list 1 2 (+ 1 2))
  #+end_src

  #+RESULTS:
  #+begin_src elisp
  (1 2 3)
  #+end_src

But with Clojure I get

  #+begin_src clojure :results code
(list 1 2 (+ 1 2))
  #+end_src

  #+RESULTS:
  #+begin_src clojure
  nil
  #+end_src