diff --git a/utils/Quality_Relabel.py b/utils/Quality_Relabel.py
index 9a83f5e..79e361a 100644
--- a/utils/Quality_Relabel.py
+++ b/utils/Quality_Relabel.py
@@ -354,7 +354,8 @@ class Quality_Relabel:
         :return:
         """
         plt_.plot(np.linspace(SP, EP, (EP - SP) * self.frequency),
-                  self.signal_select[channel][SP * self.frequency:EP * self.frequency], label=channel)
+                  self.signal_select[channel][SP * self.frequency:EP * self.frequency], label=channel,
+                  color=self.color_cycle[0])
 
         for j in event_code:
             if channel == "SpO2":