This porting makes blackboard no longer rely on color-theme package, since Emacs has it's theme mechanism from Emacs 24.

How to use:

1. First, add a local directory to custome-theme-load-path, (add-to-list 'custom-theme-load-path "~/home/$USER/drop/the/theme/to")
2. Then drop this theme into it
3. M-x load-theme, then choose blackboard, it should work, or, simple use (load-theme 'blackboard t) to enable the theme from start.