[gnome-panel/gnome-3-24] theme: fix custom background color

[Alberts Muktupāvels <muktupavels src gnome org>]

commit df6b47d25d7a99e0e76f264e29c935c98c1818dd
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Tue May 30 11:50:52 2017 +0300

    theme: fix custom background color
    
    https://bugzilla.gnome.org/show_bug.cgi?id=783168

 gnome-panel/gp-theme.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gnome-panel/gp-theme.c b/gnome-panel/gp-theme.c
index 3307f18..73c36dd 100644
--- a/gnome-panel/gp-theme.c
+++ b/gnome-panel/gp-theme.c
@@ -103,7 +103,7 @@ append_custom_bg (GpTheme *theme,
     }
   else if (custom_bg_color && bg_color != NULL)
     {
-      g_string_append_printf (string, "\tbackground-color: %s;\n", bg_color);
+      g_string_append_printf (string, "\tbackground: %s;\n", bg_color);
     }
   else if (custom_bg_image && *bg_image != '\0')
     {