3 files changed, 12 insertions, 9 deletions
diff --git a/bin/cursor b/bin/cursor
index 537c164..2ae069b 100755
--- a/bin/cursor
+++ b/bin/cursor
@@ -5,7 +5,7 @@
 usage="Usage: $0 [black | blue | cyan | gray | green | magenta | orange | red | white | yellow]"
 
 cursor() {
-	case $1 in 
+	case $1 in
 		(0|r|red)     set -- '#f00' ;;
 		(1|n|green)   set -- '#5f5' ;;
 		(2|b|blue)    set -- '#55f' ;;
diff --git a/bin/tc b/bin/tc
index 278ca3f..e2e34a4 100755
--- a/bin/tc
+++ b/bin/tc
@@ -1,6 +1,8 @@
-#!/bin/bash
+#!/bin/sh
 
-# Set terminal color in xterm and compatibles.
+# Set terminal color in xterm and compatibles
+
+usage="Usage: $0 [black | blue | cyan | gray | green | magenta | orange | red | white | yellow]"
 
 color() {
 	case $1 in
@@ -11,11 +13,11 @@ color() {
 		(4|y|yellow) bg='#ffffe0' ;;
 		(5|n|green)  bg='#e0ffe0' ;;
 		(6|o|orange) bg='#fff0f4' ;;
-		(7|k|black)  bg='#111111' fg='#eeeeee' ;;
-		(*) echo "$0: unknown color $1">&2; exit 1 ;;
+		(7|k|black)  bg='#000000' fg='#eeeeee' ;;
 	esac
+	printf '\e]11;'${bg:-#ffffff}'\e\'  # Set background color.
+	printf '\e]10;'${fg:-#000000}'\e\'  # Set foreground color.
 }
 
+case $1 in -*) echo "$usage" >&2; exit 1;; esac
 color ${1:-$((RANDOM % 7))}	
-printf '\E]11;'${bg:-#ffffff}'\E\'
-printf '\E]10;'${fg:-#000000}'\E\'
diff --git a/bin/tf b/bin/tf
index e0f18bf..a566233 100755
--- a/bin/tf
+++ b/bin/tf
@@ -8,6 +8,7 @@ terminal_font() {
 	case $1 in
 		(m|menlo|mono) fn=menlo fs=$2 ;;
 		(f|fixed|6x13) fn=6x13 fs=13 ;;
+		(s|sf)         fn='SF Mono Light' fs=8 ;;
 		([0-9]*)       fs=$1 ;;
 		(*)            fn=$1 fs=$2 ;;
 	esac
@@ -26,7 +27,7 @@ iterm2_font() {
 }
 
 case $TERM_PROGRAM in
-	(Apple_Terminal) terminal_font $@ ;;
-	(iTerm.app)      iterm2_font $@ ;;
+	(Apple_Terminal) terminal_font "$@" ;;
+	(iTerm.app)      iterm2_font "$@" ;;
 	(*)              die 'not supported' ;;
 esac