From 51615bdb94d91fd0dad0e77620b05ddac6cd4162 Mon Sep 17 00:00:00 2001
From: David Thompson <dthompson2@worcester.edu>
Date: Sat, 6 Sep 2014 15:46:30 -0400
Subject: color: Add transparent color.

* sly/color.scm (transparent): New variable.
---
 sly/color.scm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sly/color.scm b/sly/color.scm
index 3384510..143e750 100644
--- a/sly/color.scm
+++ b/sly/color.scm
@@ -48,6 +48,7 @@
             yellow
             magenta
             cyan
+            transparent
             tango-light-butter
             tango-butter
             tango-dark-butter
@@ -179,6 +180,7 @@ is left unchanged."
 (define yellow (rgb #xffff00))
 (define magenta (rgb #xff00ff))
 (define cyan (rgb #x00ffff))
+(define transparent (make-color 0 0 0 0))
 
 ;; Tango color pallete
 ;; http://tango.freedesktop.org
-- 
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