diff --git a/light9/effect/settings.py b/light9/effect/settings.py
--- a/light9/effect/settings.py
+++ b/light9/effect/settings.py
@@ -64,8 +64,14 @@ class _Settings:
     def __init__(self, graph: GraphType, settingsList: List[Tuple[Any, Any, VTUnion]]):
         self.graph = graph  # for looking up all possible attrs
         self._compiled: Dict[self.__class__.EntityType, Dict[self.__class__.AttrType, VTUnion]] = {}
-        for row in settingsList:
-            self._compiled.setdefault(row[0], {})[row[1]] = row[2]
+        for e, a, v in settingsList:
+            attrVals = self._compiled.setdefault(e, {})
+            if a in attrVals:
+                v = resolve(
+                    e,  # Hey, this is supposed to be DeviceClass (which is not convenient for us), but so far resolve() doesn't use that arg
+                    a,
+                    [attrVals[a], v])
+            attrVals[a] = v
         # self._compiled may not be final yet- see _fromCompiled
         self._delZeros()