diff --git a/colour.hpp b/colour.hpp
index c9802eee..ff77374f 100644
--- a/colour.hpp
+++ b/colour.hpp
@@ -32,11 +32,6 @@ namespace util {
     struct colour : public detail::coord<4, T> {
         using detail::coord<4,T>::coord;
 
-        T r;
-        T g;
-        T b;
-        T a;
-
         static const colour WHITE;
         static const colour BLACK;
         static const colour RED;
diff --git a/test/Makefile.am b/test/Makefile.am
index 8e0c48c9..04ed9da6 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -5,6 +5,7 @@ TEST_BIN = 		\
 	backtrace 	\
 	bitwise		\
 	checksum	\
+	colour		\
 	float		\
 	hton		\
 	ip 		\
diff --git a/test/colour.cpp b/test/colour.cpp
new file mode 100644
index 00000000..9204da88
--- /dev/null
+++ b/test/colour.cpp
@@ -0,0 +1,16 @@
+#include "colour.hpp"
+ 
+#include "debug.hpp"
+
+int
+main (int, char**)
+{
+    CHECK_EQ (&util::colour4f::WHITE.x,
+              &util::colour4f::WHITE.r);
+
+    CHECK_EQ (util::colour4f::WHITE.x, 1.f);
+    CHECK_EQ (util::colour4f::WHITE.r, 1.f);
+    CHECK_EQ (util::colour4f::WHITE.g, 1.f);
+    CHECK_EQ (util::colour4f::WHITE.b, 1.f);
+    CHECK_EQ (util::colour4f::WHITE.a, 1.f);
+}