diff --git a/show/dance2023/effect/effect8.n3 b/show/dance2023/effect/effect8.n3
new file mode 100644
--- /dev/null
+++ b/show/dance2023/effect/effect8.n3
@@ -0,0 +1,15 @@
+@prefix : <http://light9.bigasterisk.com/> .
+@prefix effect: <http://light9.bigasterisk.com/effect/> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+
+effect:effect8 a :Effect; rdfs:label "rainbow-background"; :effectFunction <http://light9.bigasterisk.com/effectFunction/scale>;
+     :publishAttr :strength; :setting :e_set8 .
+:ds_val8 :setting effect:effect8_set0, effect:effect8_set1, effect:effect8_set2 .
+:e_set8 :effectAttr :deviceSettings; :value :ds_val8 .
+effect:effect8_set0 :device <http://light9.bigasterisk.com/theater/vet/device/strip3>;
+     :deviceAttr :color; :value "#ff0000" .
+effect:effect8_set1 :device <http://light9.bigasterisk.com/theater/vet/device/strip1>;
+     :deviceAttr :color; :value "#0d00ff" .
+effect:effect8_set2 :device <http://light9.bigasterisk.com/theater/vet/device/strip2>;
+     :deviceAttr :color; :value "#0cff00" .