This porting makes blackboard no longer rely on color-theme package, since Emacs has it's theme mechanism from Emacs 24.
Already in MELPA https://melpa.org/#/blackboard-theme
1. First, add a local directory to custome-theme-load-path,
(add-to-list 'custom-theme-load-path "~/home/$USER/drop/the/theme/to")
M-x load-theme
, then choose blackboard, it should work, or, simple use (load-theme 'blackboard t)
to enable the theme from start.