now _all works!

bashrc_overrides/_all

@@ -1,5 +1,5 @@
 for source in colored_commands convenience_aliases git_functions histcontrol ls_aliases safety_aliases terminal_colors terminal_fancyfying; do
-  if [ -f $source ]; then
-    . $source
+  if [ -f ~/.bashrc_overrides/$source ]; then
+    . ~/.bashrc_overrides/$source
   fi
 done