Fix weird tmux background & set default term

.bashrc

@@ -1,6 +1,7 @@
 # ~/.bashrc: executed by bash(1) for non-login shells.
 # see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
 # for examples
+TERM=xterm-256color
 
 # If not running interactively, don't do anything
 case $- in

vim/.vimrc

@@ -25,6 +25,7 @@ set path+=**
 set wildmenu
 
 set backspace=2
+set t_ut=
 
 "Change theme depending on the time of day
 let hr = (strftime('%H'))