1 files changed, 26 insertions, 1 deletions
diff --git a/games/rstnode/rst-client/src/color.rs b/games/rstnode/rst-client/src/color.rs
index 4fbd7519dcd0..65c32974ac81 100644
--- a/games/rstnode/rst-client/src/color.rs
+++ b/games/rstnode/rst-client/src/color.rs
@@ -1,7 +1,32 @@
 use ggez::graphics::Color as EzColor;
 use rst_core::data::Color;
 
-
 pub fn to(Color(r, g, b): Color) -> EzColor {
     EzColor::from_rgb(r, g, b)
 }
+
+/// A utility for manipulating colours
+pub trait ColorUtils {
+    fn darken(&self, factor: u8) -> Self;
+    fn brighten(&self, factor: u8) -> Self;
+}
+
+impl ColorUtils for EzColor {
+    fn darken(&self, factor: u8) -> Self {
+        Self {
+            r: self.r / factor as f32,
+            g: self.g / factor as f32,
+            b: self.b / factor as f32,
+            a: self.a,
+        }
+    }
+
+    fn brighten(&self, factor: u8) -> Self {
+        Self {
+            r: self.r * factor as f32,
+            g: self.g * factor as f32,
+            b: self.b * factor as f32,
+            a: self.a,
+        }
+    }
+}