common lisp - Adding Color Themes to Lispbox -

i'm new using common lisp , using lispbox. add color-theme package lispbox running on osx change color theme. i'm trying use command:

 (add-to-list 'load-path "~/desktop/colortheme/") 

however keep getting same error:

  undefined function add-to-list called arguments (load-path "/desktop/colortheme/"). 

can please me here?

thanks in advance,

cameron

as far know, lispbox preconfigured bundle of emacs, slime, , clozure cl. think might confusing emacs lisp , common lisp parts of bundle. need put snippet showed emacs lisp part, i.e. (to configuration @ startup) .emacs configuration file. repl, is, cl-user > prompt, common lisp interface , has nothing emacs' inner workings.