diff --git a/functions b/functions
index afd88f1..c24953c 100644
--- a/functions
+++ b/functions
@@ -20,6 +20,22 @@ function insert-sudo {
   zle -U "sudo "
 }
 
+function true-colors {
+  awk 'BEGIN{
+    s="/\\/\\/\\/\\/\\"; s=s s s s s s s s;
+    for (colnum = 0; colnum<77; colnum++) {
+        r = 255-(colnum*255/76);
+        g = (colnum*510/76);
+        b = (colnum*255/76);
+        if (g>255) g = 510-g;
+        printf "\033[48;2;%d;%d;%dm", r,g,b;
+        printf "\033[38;2;%d;%d;%dm", 255-r,255-g,255-b;
+        printf "%s\033[0m", substr(s,colnum+1,1);
+    }
+    printf "\n";
+  }'
+}
+
 function port-forward {
   if [ $# -lt 2 ]; then
     echo Usage: port-forward HOST LOCAL_PORT \[REMOTE_PORT\]
diff --git a/tmux.conf b/tmux.conf
index d675b64..b759615 100644
--- a/tmux.conf
+++ b/tmux.conf
@@ -3,6 +3,7 @@ bind-key r source-file ~/.tmux.conf \; display-message " ✱ ~/.tmux.conf is rel
 
 # 256 colors
 set -g default-terminal "screen-256color"
+set-option -ga terminal-overrides ",xterm-256color:Tc"
 
 # double tap for back and forth
 bind-key C-b last-window