color: Rename enum

COLOR_NONE is more descriptive than COLOR_CLEAR.

Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
diff --git a/include/json_print.h b/include/json_print.h
index 596af35..dc4d2bb 100644
--- a/include/json_print.h
+++ b/include/json_print.h
@@ -53,7 +53,7 @@
 					     const char *fmt,		\
 					     type value)		\
 	{								\
-		print_color_##type_name(t, COLOR_CLEAR, key, fmt, value);	\
+		print_color_##type_name(t, COLOR_NONE, key, fmt, value);	\
 	}
 _PRINT_FUNC(int, int);
 _PRINT_FUNC(bool, bool);