diff --git a/datasets/raise/generate_histogram.py b/datasets/raise/generate_histogram.py
index 6704e6f..5d589c3 100644
--- a/datasets/raise/generate_histogram.py
+++ b/datasets/raise/generate_histogram.py
@@ -9,15 +9,6 @@ image.histogram()
 
 HEX_COLOR = '#%02x%02x%02x'
 
-def getRed(redIntensity):
-    return HEX_COLOR % (redIntensity, 0, 0)
-
-def getGreen(greenIntensity):
-    return HEX_COLOR % (0, greenIntensity, 0)
-
-def getBlue(blueIntensity):
-    return HEX_COLOR % (0, 0, blueIntensity)
-
 def getColor(intensity, colorIndex):
     return HEX_COLOR % tuple((intensity if colorIndex == colorIndexTmp else 0) for colorIndexTmp in range(3))
 
@@ -28,17 +19,9 @@ red = histogram[0:COLOR_BASE]
 green = histogram[COLOR_BASE:COLOR_BASE*2]
 blue = histogram[COLOR_BASE*2:COLOR_BASE*3]
 
-#for colorIndex, color in [red, green, blue]
-plt.figure(0)
-for i in range(0, COLOR_BASE):
-    plt.bar(i, red[i], color = getColor(i, 0),alpha=0.3)
-
-plt.figure(1)
-for i in range(0, COLOR_BASE):
-    plt.bar(i, green[i], color = getColor(i, 1),alpha=0.3)
-
-plt.figure(2)
-for i in range(0, COLOR_BASE):
-    plt.bar(i, blue[i], color = getColor(i, 2),alpha=0.3)
+for colorIndex, color in enumerate([red, green, blue]):
+    #plt.figure(colorIndex)
+    for i in range(COLOR_BASE):
+        plt.bar(i, color[i], color = getColor(i, colorIndex), alpha = 0.3)
 
 plt.show()
\ No newline at end of file