add script to print all shell colors

private_dot_local/private_bin/executable_print-shell-colors.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+i=0
+for j in {1..16}; do
+  for k in {1..16}; do
+    printf "\e[1;48;05;${i}m %03d \e[0m" $i
+    i=$((i+1))
+  done
+  echo
+done