Change default theme to my preferred dark theme

See #424

lisp/init-themes.el

@@ -2,7 +2,7 @@
 (require-package 'color-theme-sanityinc-tomorrow)
 
 ;; If you don't customize it, this is the theme you get.
-(setq-default custom-enabled-themes '(sanityinc-solarized-light))
+(setq-default custom-enabled-themes '(sanityinc-tomorrow-bright))
 
 ;; Ensure that themes will be applied even if they have not been customized
 (defun reapply-themes ()
@@ -21,12 +21,14 @@
 (defun light ()
   "Activate a light color theme."
   (interactive)
-  (color-theme-sanityinc-solarized-light))
+  (setq custom-enabled-themes '(sanityinc-tomorrow-day))
+  (reapply-themes))
 
 (defun dark ()
   "Activate a dark color theme."
   (interactive)
-  (color-theme-sanityinc-solarized-dark))
+  (setq custom-enabled-themes '(sanityinc-tomorrow-bright))
+  (reapply-themes))
 
 
 (provide 'init-themes)