diff --git a/example/logger/csv_2_plot.py b/example/logger/csv_2_plot.py
index cd636e2..ff565ec 100644
--- a/example/logger/csv_2_plot.py
+++ b/example/logger/csv_2_plot.py
@@ -122,9 +122,9 @@ def plot_power_data(csv_path, output_path, plot_types, sources):
         for y_val in range(int(y_min), int(y_max) + 1):
             if y_val == 0: continue
             if y_val % 10 == 0:
-                ax.axhline(y=y_val, color='green', linestyle='-', linewidth=1.0, zorder=1)
+                ax.axhline(y=y_val, color='maroon', linestyle='--', linewidth=1.2, zorder=1)
             elif y_val % 5 == 0:
-                ax.axhline(y=y_val, color='red', linestyle='-', linewidth=1.0, zorder=1)
+                ax.axhline(y=y_val, color='midnightblue', linestyle='--', linewidth=1.2, zorder=1)
 
         # Keep the x-axis grid
         ax.xaxis.grid(True, which='major', linestyle='--', linewidth=0.8)
diff --git a/example/logger/plot.png b/example/logger/plot.png
index 1c355d5..916615b 100644
Binary files a/example/logger/plot.png and b/example/logger/plot.png differ