diff --git a/sim/visuals/microbit.ts b/sim/visuals/microbit.ts
index 1d3958ec..8e37e7df 100644
--- a/sim/visuals/microbit.ts
+++ b/sim/visuals/microbit.ts
@@ -202,8 +202,8 @@ namespace pxsim.visuals {
             pin: "#D4AF37",
             pinTouched: "#FFA500",
             pinActive: "#FF5500",
-            ledOn: "#ff7f7f",
-            ledOff: "#ccc",
+            ledOn: "#ff7777",
+            ledOff: "#666",
             buttonOuter: "#979797",
             buttonUp: "#000",
             buttonDown: "#FFA500",