diff --git a/app/logging.yaml b/app/logging.yaml
index fa07d8e..6da7dcb 100644
--- a/app/logging.yaml
+++ b/app/logging.yaml
@@ -4,7 +4,7 @@ disable_existing_loggers: True
 formatters:
   colored:
     (): colorlog.ColoredFormatter
-    format: "%(log_color)s[%(asctime)s] %(filename)s.%(funcName)s:%(lineno)s %(blue)s%(message)s"
+    format: "%(log_color)s[%(asctime)s] %(filename)s.%(funcName)s:%(lineno)s %(light_blue)s%(message)s"
     datefmt: "%H:%M:%S"
   syslog:
     format: "[%(name)s] %(filename)s:%(lineno)s %(leveltag)s: %(message)s"
@@ -25,6 +25,7 @@ filters:
       musicmuster:
         - update_clocks
         - play_next
+        - show_signal
 
 handlers:
   stderr:
diff --git a/app/musicmuster.py b/app/musicmuster.py
index 11cd99d..275adb9 100755
--- a/app/musicmuster.py
+++ b/app/musicmuster.py
@@ -151,7 +151,7 @@ class SignalMonitor:
         )
 
     def show_signal(self, name: str, *args: Any) -> None:
-        print(f"{name=}, args={args}")
+        log.debug(f"{name=}, args={args}")
 
 
 class Current: