--- src/colour.cpp.orig	2011-10-30 16:52:53.000000000 +0100

+++ src/colour.cpp	2016-04-08 00:08:57.551412000 +0200

@@ -47,9 +47,9 @@ unsigned int obby::colour::get_blue() co

 bool obby::colour::similar_colour(const colour& colour) const

 {

 	// TODO: Convert to HSV for better checking

-	return abs(m_red - colour.m_red) +

-	       abs(m_green - colour.m_green) +

-	       abs(m_blue - colour.m_blue) < 32;

+	return abs((int)(m_red - colour.m_red)) +

+	       abs((int)(m_green - colour.m_green)) +

+	       abs((int)(m_blue - colour.m_blue)) < 32;

 }

 std::string serialise::default_context_to<obby::colour>::