diff --git a/src/platform/smart_leds_lib.rs b/src/platform/smart_leds_lib.rs
index 2ecec97..905d48b 100644
--- a/src/platform/smart_leds_lib.rs
+++ b/src/platform/smart_leds_lib.rs
@@ -1,6 +1,7 @@
 use smart_leds_trait::SmartLedsWrite;
 use running_average::RealTimeRunningAverage;
 
+use crate::lib8::Rgb8Blend;
 use crate::render::{Surface, SurfacePool, Display, Surfaces};
 use crate::task::Task;
 use crate::power::{brightness_for_mw, AsMilliwatts};
@@ -79,7 +80,7 @@ impl<T: SmartLedsWrite<Color = Rgb<u8>>, S: Surface> Display<S> for SmartLedDisp
             let mut pixel = Rgb::new(0, 0, 0);
             for surface in self.surfaces.iter() {
                 surface.with_shader(|shader| {
-                    pixel = shader.draw(virt_coords.clone());
+                    pixel = pixel.saturating_add(shader.draw(virt_coords.clone()));
                 })
             }
             self.total_mw += pixel.as_milliwatts();