gfio: make 'light yellow' color a little lighter

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/gfio.c b/gfio.c
index 9522832..3138941 100644
--- a/gfio.c
+++ b/gfio.c
@@ -1678,7 +1678,7 @@
 	settings = gtk_settings_get_default();
 	gtk_settings_set_long_property(settings, "gtk_tooltip_timeout", 10, "gfio setting");
 	g_type_init();
-	gdk_color_parse("#ffffee", &gfio_color_lightyellow);
+	gdk_color_parse("#fffff4", &gfio_color_lightyellow);
 	gdk_color_parse("white", &gfio_color_white);
 
 	ui->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);