color changes

bin/colortest

@@ -0,0 +1,34 @@
+#!/bin/sh
+# Show the 16 base terminal colors (regular0-7, bright0-7) as fg/bg swatches
+# with sample text, for eyeballing a foot/terminal colorscheme.
+
+names="black red green yellow blue magenta cyan white"
+
+printf '\n\033[1mForeground on default background:\033[0m\n'
+i=0
+for n in $names; do
+    printf ' \033[3%sm%2d regular %-8s sample text AaBbCc\033[0m\n' "$i" "$i" "$n"
+    i=$((i + 1))
+done
+i=0
+for n in $names; do
+    printf ' \033[9%sm%2d bright  %-8s sample text AaBbCc\033[0m\n' "$i" "$((i + 8))" "$n"
+    i=$((i + 1))
+done
+
+printf '\n\033[1mBackground swatches (with contrasting text):\033[0m\n'
+i=0
+for n in $names; do
+    fg=15
+    [ "$i" = 3 ] && fg=0
+    [ "$i" = 7 ] && fg=0
+    printf ' \033[4%sm\033[38;5;%sm %2d regular %-8s \033[0m' "$i" "$fg" "$i" "$n"
+    i=$((i + 1))
+done
+printf '\n'
+i=0
+for n in $names; do
+    printf ' \033[10%sm\033[38;5;0m %2d bright  %-8s \033[0m' "$i" "$((i + 8))" "$n"
+    i=$((i + 1))
+done
+printf '\n\n'