--- synfig-0.64.3/src/synfig/color.h.orig	2016-01-25 12:44:31.397318818 +0000
+++ synfig-0.64.3/src/synfig/color.h	2016-01-25 12:46:54.206630232 +0000
@@ -120,8 +120,8 @@
 
 public:
 	
-	static const value_type ceil=1;	
-	static const value_type floor=0;
+	static constexpr value_type ceil=1;	
+	static constexpr value_type floor=0;
 	
 	const String get_string(void)const;
 
@@ -589,7 +589,7 @@
 public:
 	static const unsigned char ceil=255;	
 	static const unsigned char floor=0;
-	static const float range=ceil-floor;
+	static constexpr float range=ceil-floor;
 	static const value_type amask=0xFF<<24;
 	static const value_type rmask=0xFF<<16;
 	static const value_type gmask=0xFF<<8;