From 7c520b17bad9dbb61c981af4fea0015a93654e3b Mon Sep 17 00:00:00 2001
From: Jeff Moe <moe@spacecruft.org>
Date: Wed, 27 Jul 2022 01:43:52 -0600
Subject: [PATCH] docs say 0 is erase color

---
 README.md | 2 +-
 skymap.c  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index e1dd852..447c396 100644
--- a/README.md
+++ b/README.md
@@ -60,7 +60,7 @@ Colors 1-15 are used in the color index, documented here:
 With giza, it renders more like this:
 
 ```
-0   Black
+0   Erase ?
 1   Black
 2   Orange
 3   Forest green
diff --git a/skymap.c b/skymap.c
index e738f28..1b04e18 100644
--- a/skymap.c
+++ b/skymap.c
@@ -1731,7 +1731,7 @@ void skymap_plotsatellite(char *filename,int satno,double mjd0,double dt)
 	    break;
 	  } else {
 	    if (s.salt<0.0)
-	      cpgsci(7);
+	      cpgsci(128);
 	    else
 	      cpgsci(8);
 	  }