diff --git a/elisp/extras.el b/elisp/extras.el
index fd68dc9..bb25578 100644
--- a/elisp/extras.el
+++ b/elisp/extras.el
@@ -55,15 +55,15 @@
   (add-to-list 'auto-mode-alist '("\\.epub\\'" . nov-mode)))
 (use-package pdf-tools
   :config
-  (pdf-tools-install))
+  ((pdf-tools-install))
+  (setq pdf-view-midnight-colors '("#DCDCCC" . "#3F3F3F")))
 
 ;; Disk usage analyzer
 (use-package disk-usage)
 
 ;; Mail reader
 ;; This package was installed with debian, I hope this works
-(use-package
-  '(mu4e :files (:defaults "mu4e/*.el"))
+(use-package mu4e
   :config
   (load "~/.emacs.d/elisp/mu4e-setup.el"))
 ;; mail notification in modeline