strobe: choose color by wheel parameter

src/patterns/strobe.rs

@@ -28,11 +28,17 @@ impl ColorGrid for Strobe {
     fn get(&self, p: &Vector2<f32>) -> Rgb<f32> {
         let t = (self.inputs.wheel as f32 * self.inputs.t.as_millis() as f32 / self.inputs.cycle_len.as_millis() as f32) % 1.0;
 
-        if t < 0.6 {
-            Rgb::new(0.3, 0.3, 0.3)
-        } else {
-            Rgb::new(0.05, 0.05, 0.05)
-        }
+        Rgb::from_color(
+            &Hsv::<f32, Turns<f32>>::new(
+                Turns( (self.inputs.wheel.abs() % 256) as f32 / 256.0 ),
+                0.9,
+                if t < 0.6 {
+                    0.3
+                } else {
+                    1.0
+                }
+            )
+        )
     }
 }