Ok, I did need it. Steady re-instated.

busylight/effects/__init__.py

@@ -6,10 +6,12 @@
 from .blink import Blink
 from .gradient import Gradient
 from .spectrum import Spectrum
+from .steady import Steady
 
 __all__ = [
     "Effects",
     "Blink",
     "Gradient",
     "Spectrum",
+    "Steady",
 ]

busylight/effects/steady.py

@@ -0,0 +1,28 @@
+"""
+"""
+
+from typing import List
+
+from ..color import ColorList, ColorTuple
+from .effect import BaseEffect
+
+
+class Steady(BaseEffect):
+    def __init__(self, color: ColorTuple) -> None:
+        self.color = color
+
+    def __repr__(self) -> str:
+        return f"{self.name}(color={self.color!r})"
+
+    @property
+    def duty_cycle(self) -> float:
+        return 86400
+
+    @property
+    def colors(self) -> ColorList:
+        try:
+            return self._colors
+        except AttributeError:
+            pass
+        self._colors = [self.color]
+        return self._colors