From b51079b26a7f26958a121c584276c28103249da7 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 7 Feb 2012 10:07:06 +0530
Subject: [PATCH] RTF Input: Strip out false color specifications, as they
 cause artifacts when converted to MOBI

---
 src/calibre/ebooks/conversion/plugins/rtf_input.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/ebooks/conversion/plugins/rtf_input.py b/src/calibre/ebooks/conversion/plugins/rtf_input.py
index 91c285c10c..d85c067242 100644
--- a/src/calibre/ebooks/conversion/plugins/rtf_input.py
+++ b/src/calibre/ebooks/conversion/plugins/rtf_input.py
@@ -177,7 +177,7 @@ class RTFInput(InputFormatPlugin):
         font_size_classes = ['span.fs%d { font-size: %spt }'%(i, x) for i, x in
                 enumerate(ic.font_sizes)]
         color_classes = ['span.col%d { color: %s }'%(i, x) for i, x in
-                enumerate(ic.colors)]
+                enumerate(ic.colors) if x != 'false']
         css = textwrap.dedent('''
         span.none {
             text-decoration: none; font-weight: normal;