diff --git a/CALIBRATION/hms_cal_calib/hcal_calib.cpp b/CALIBRATION/hms_cal_calib/hcal_calib.cpp
index 6594d8c0d4a77ee89ea814974de4d1a2b5b1a7f0..57668b78db79b6d903a591b1a7707fddea884d1a 100644
--- a/CALIBRATION/hms_cal_calib/hcal_calib.cpp
+++ b/CALIBRATION/hms_cal_calib/hcal_calib.cpp
@@ -43,7 +43,7 @@ void hcal_calib(string RunNumber) {
  // E(Tail) vs E(Preshower) plot.
 
  Canvas->cd(2);
- theShowerCalib.hETAvsEPR->Draw();
+ theShowerCalib.hETAvsEPR->Draw("colz");
 
  // Normalized energy deposition after calibration.
 
@@ -58,7 +58,7 @@ void hcal_calib(string RunNumber) {
  // HMS delta(P) versus the calibrated energy deposition.
 
  Canvas->cd(4);
- theShowerCalib.hDPvsEcal->Draw();
+ theShowerCalib.hDPvsEcal->Draw("colz");
 
  // Calculate the analysis rate
  t = clock() - t;
diff --git a/CALIBRATION/shms_cal_calib/pcal_calib.cpp b/CALIBRATION/shms_cal_calib/pcal_calib.cpp
index 0411401802208ce5e4a432e05af97317364c93ac..c8c8d8b041dc26285a9127731838c06033be7bab 100644
--- a/CALIBRATION/shms_cal_calib/pcal_calib.cpp
+++ b/CALIBRATION/shms_cal_calib/pcal_calib.cpp
@@ -42,7 +42,7 @@ void pcal_calib(string RunNumber, int nstart=0, int nstop=999999999) {
   theShowerCalib.hEuncSel->DrawCopy("same");
 
   Canvas->cd(2);
-  theShowerCalib.hESHvsEPR->Draw();
+  theShowerCalib.hESHvsEPR->Draw("colz");
 
   // Normalized energy deposition after calibration.
 
@@ -57,7 +57,7 @@ void pcal_calib(string RunNumber, int nstart=0, int nstop=999999999) {
   // SHMS delta(P) versus the calibrated energy deposition.
 
   Canvas->cd(4);
-  theShowerCalib.hDPvsEcal->Draw();
+  theShowerCalib.hDPvsEcal->Draw("colz");
 
   // Save canvas in a pdf format.
   Canvas->Print(Form("%s_%d-%d.pdf",RunNumber.c_str(),nstart,nstop));