make sure tmux is launched in 256 color mode
diff --git a/plugins/tmux.plugin.bash b/plugins/tmux.plugin.bash
new file mode 100644
index 0000000..ff35336
--- /dev/null
+++ b/plugins/tmux.plugin.bash
@@ -0,0 +1,2 @@
+# make sure that tmux is launched in 256 color mode
+alias tmux="TERM=xterm-256color tmux"