diff --git a/src/core/color.rs b/src/core/color.rs
new file mode 100644
index 0000000..2ded4e6
--- /dev/null
+++ b/src/core/color.rs
@@ -0,0 +1,6 @@
+#[derive(Debug)]
+pub struct LinearColor {
+    pub r: f64,
+    pub g: f64,
+    pub b: f64,
+}
diff --git a/src/core/mod.rs b/src/core/mod.rs
index e69de29..fd80bfc 100644
--- a/src/core/mod.rs
+++ b/src/core/mod.rs
@@ -0,0 +1,2 @@
+pub mod color;
+pub use color::*;