diff --git a/rtchallenge/src/tuples.rs b/rtchallenge/src/tuples.rs
index de1e8ef..81ac045 100644
--- a/rtchallenge/src/tuples.rs
+++ b/rtchallenge/src/tuples.rs
@@ -126,9 +126,9 @@ pub fn cross(a: Tuple, b: Tuple) -> Tuple {
 
 #[derive(Copy, Clone, Debug, PartialEq)]
 pub struct Color {
-    red: f32,
-    green: f32,
-    blue: f32,
+    pub red: f32,
+    pub green: f32,
+    pub blue: f32,
 }
 pub fn color(red: f32, green: f32, blue: f32) -> Color {
     Color { red, green, blue }