256 color test for good measure

256colors2.pl

@@ -0,0 +1,63 @@
+#!/usr/bin/perl
+# Author: Todd Larason <jtl@molehill.org>
+# $XFree86: xc/programs/xterm/vttests/256colors2.pl,v 1.2 2002/03/26 01:46:43 dickey Exp $
+
+# use the resources for colors 0-15 - usually more-or-less a
+# reproduction of the standard ANSI colors, but possibly more
+# pleasing shades
+
+# colors 16-231 are a 6x6x6 color cube
+for ($red = 0; $red < 6; $red++) {
+    for ($green = 0; $green < 6; $green++) {
+	for ($blue = 0; $blue < 6; $blue++) {
+	    printf("\x1b]4;%d;rgb:%2.2x/%2.2x/%2.2x\x1b\\",
+		   16 + ($red * 36) + ($green * 6) + $blue,
+		   ($red ? ($red * 40 + 55) : 0),
+		   ($green ? ($green * 40 + 55) : 0),
+		   ($blue ? ($blue * 40 + 55) : 0));
+	}
+    }
+}
+
+# colors 232-255 are a grayscale ramp, intentionally leaving out
+# black and white
+for ($gray = 0; $gray < 24; $gray++) {
+    $level = ($gray * 10) + 8;
+    printf("\x1b]4;%d;rgb:%2.2x/%2.2x/%2.2x\x1b\\",
+	   232 + $gray, $level, $level, $level);
+}
+
+
+# display the colors
+
+# first the system ones:
+print "System colors:\n";
+for ($color = 0; $color < 8; $color++) {
+    print "\x1b[48;5;${color}m  ";
+}
+print "\x1b[0m\n";
+for ($color = 8; $color < 16; $color++) {
+    print "\x1b[48;5;${color}m  ";
+}
+print "\x1b[0m\n\n";
+
+# now the color cube
+print "Color cube, 6x6x6:\n";
+for ($green = 0; $green < 6; $green++) {
+    for ($red = 0; $red < 6; $red++) {
+	for ($blue = 0; $blue < 6; $blue++) {
+	    $color = 16 + ($red * 36) + ($green * 6) + $blue;
+	    print "\x1b[48;5;${color}m  ";
+	}
+	print "\x1b[0m ";
+    }
+    print "\n";
+}
+
+
+# now the grayscale ramp
+print "Grayscale ramp:\n";
+for ($color = 232; $color < 256; $color++) {
+    print "\x1b[48;5;${color}m  ";
+}
+print "\x1b[0m\n";