diff --git a/src/colour.rs b/src/colour.rs
new file mode 100644
index 0000000..1b7ec66
--- /dev/null
+++ b/src/colour.rs
@@ -0,0 +1,43 @@
+pub mod colour {
+    #[derive(Debug, Eq, PartialEq)]
+    pub struct Colour {
+        pub(crate) red: u8,
+        pub(crate) green: u8,
+        pub(crate) blue: u8,
+    }
+
+    impl From<String> for Colour {
+        fn from(string: String) -> Colour {
+            let values: Vec<&str> = string.split(',').collect();
+
+            let red:   u8 = values[0].parse().unwrap_or(0);
+            let green: u8 = values[1].parse().unwrap_or(0);
+            let blue:  u8 = values[2].parse().unwrap_or(0);
+
+            Colour { red, green, blue }
+        }
+    }
+
+    impl ToString for Colour {
+        #[inline]
+        fn to_string(&self) -> String {
+            format!("{},{},{}", self.red, self.green, self.blue)
+        }
+    }
+}
+
+#[test]
+fn test_colour_from_string() {
+    assert_eq!(
+        colour::Colour::from("0,255,0".to_string()),
+        colour::Colour { red: 0, green: 255, blue: 0 }
+    );
+}
+
+#[test]
+fn test_colour_to_string() {
+    assert_eq!(
+        colour::Colour { red: 22, green: 33, blue: 44 }.to_string(),
+        "22,33,44".to_string()
+    );
+}
diff --git a/src/lib.rs b/src/lib.rs
index c843b7e..2e79a14 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,9 +1,6 @@
-#[derive(Debug, Eq, PartialEq)]
-struct Colour {
-    red:   u8,
-    green: u8,
-    blue:  u8,
-}
+pub mod colour;
+
+use colour::colour::Colour;
 
 #[derive(Debug, Eq, PartialEq)]
 struct Palette {
@@ -589,41 +586,6 @@ fn test_tile_to_string() {
     assert_eq!(output, expected);
 }
 
-impl From<String> for Colour {
-    fn from(string: String) -> Colour {
-        let values: Vec<&str> = string.split(',').collect();
-
-        let red:   u8 = values[0].parse().unwrap_or(0);
-        let green: u8 = values[1].parse().unwrap_or(0);
-        let blue:  u8 = values[2].parse().unwrap_or(0);
-
-        Colour { red, green, blue }
-    }
-}
-
-#[test]
-fn test_colour_from_string() {
-    assert_eq!(
-        Colour::from("0,255,0".to_string()),
-        Colour { red: 0, green: 255, blue: 0 }
-    );
-}
-
-impl ToString for Colour {
-    #[inline]
-    fn to_string(&self) -> String {
-        format!("{},{},{}", self.red, self.green, self.blue)
-    }
-}
-
-#[test]
-fn test_colour_to_string() {
-    assert_eq!(
-        Colour { red: 22, green: 33, blue: 44 }.to_string(),
-        "22,33,44".to_string()
-    );
-}
-
 impl From<String> for Palette {
     fn from(string: String) -> Palette {
         let lines: Vec<&str> = string.lines().collect();