diff --git a/chart/function/create_chart.py b/chart/function/create_chart.py
index 74cede3..ef866fa 100644
--- a/chart/function/create_chart.py
+++ b/chart/function/create_chart.py
@@ -87,7 +87,13 @@ async def create_chart(
 	)
 
 	
-	plt.plot(newx_2, newy_2)
+	if rate[0] < rate[-1]:
+		plt.plot(newx_2, newy_2, color='green')
+	elif rate[0] > rate[-1]:
+		plt.plot(newx_2, newy_2, color='red', marker='o')
+	else:
+		plt.plot(newx_2, newy_2, color='grey')
+
 	plt.savefig(f'../charts/{name}.png')
 	fig.clear()