diff --git a/realtime.py b/realtime.py
index 89191f3..e89da3e 100644
--- a/realtime.py
+++ b/realtime.py
@@ -1556,13 +1556,16 @@ class RealTimeChart:
                             row=1, col=1
                         )
                         
-                        # Volume chart
+                        # Volume chart - use red/green colors based on price movement
+                        colors = ['rgba(0,255,0,0.7)' if close >= open else 'rgba(255,0,0,0.7)' 
+                                 for open, close in zip(df['open'], df['close'])]
+                        
                         fig.add_trace(
                             go.Bar(
                                 x=df.index,
                                 y=df['volume'],
                                 name='Volume',
-                                marker_color='rgba(0, 0, 255, 0.5)'
+                                marker_color=colors
                             ),
                             row=2, col=1
                         )