diff --git a/src/docs/HISTORY.md b/src/docs/HISTORY.md
index 75fc9a23a..188753252 100644
--- a/src/docs/HISTORY.md
+++ b/src/docs/HISTORY.md
@@ -7,6 +7,9 @@ v1.2.8
   Compare Mode.
 - A/B Wipe Comparison now properly follows the cursor when zoomed in.
 - Fixed and simplified bakeOCIO.py demo script.
+- Fixed changing displayOptions through python not reflecting the changes in
+  the UI.
+- Fixed compareDemo.py script to reflect new A/B Comparison changes.
 
 
 v1.2.7
diff --git a/src/lib/mrvApp/mrvMainControl.cpp b/src/lib/mrvApp/mrvMainControl.cpp
index 0dd1f1064..9d56d955f 100644
--- a/src/lib/mrvApp/mrvMainControl.cpp
+++ b/src/lib/mrvApp/mrvMainControl.cpp
@@ -220,11 +220,13 @@ namespace mrv
         Viewport* view = p.ui->uiView;
         view->setLUTOptions(p.lutOptions);
         view->setDisplayOptions({p.displayOptions});
+        view->updateDisplayOptions();
         if (p.ui->uiSecondary)
         {
             view = p.ui->uiSecondary->viewport();
             view->setLUTOptions(p.lutOptions);
             view->setDisplayOptions({p.displayOptions});
+            view->updateDisplayOptions();
         }
 
         auto display = p.ui->uiTimeline->getDisplayOptions();
@@ -261,7 +263,6 @@ namespace mrv
     {
         TLRENDER_P();
 
-
         App* app = p.ui->app;
         p.volume = app->volume();
         p.mute = app->isMuted();
diff --git a/src/lib/mrvGL/mrvTimelineViewport.cpp b/src/lib/mrvGL/mrvTimelineViewport.cpp
index 912c7d73e..fc6ca3bdf 100644
--- a/src/lib/mrvGL/mrvTimelineViewport.cpp
+++ b/src/lib/mrvGL/mrvTimelineViewport.cpp
@@ -805,7 +805,7 @@ namespace mrv
         if (value == p.lutOptions)
             return;
         p.lutOptions = value;
-        
+
         auto display = p.ui->uiTimeline->getDisplayOptions();
         display.lut = value;
         p.ui->uiTimeline->setDisplayOptions(display);
@@ -830,6 +830,44 @@ namespace mrv
         if (value == p.displayOptions)
             return;
         p.displayOptions = value;
+
+        const auto& d = p.displayOptions[0];
+
+        float gamma, saturation, gain;
+        if (d.levels.enabled)
+        {
+            gamma = d.levels.gamma;
+        }
+        else
+        {
+            gamma = 1.0;
+        }
+        if (d.color.enabled)
+        {
+            gain = d.color.brightness.x;
+            saturation = d.color.saturation.x;
+
+            if (d.exrDisplay.exposure > 0.001F)
+            {
+                gain /= d.exrDisplay.exposure;
+            }
+        }
+        else
+        {
+            gain = 1.0;
+            saturation = 1.0;
+        }
+
+        //
+        // Update UI sliders
+        //
+        p.ui->uiGain->value(gain);
+        p.ui->uiGainInput->value(gain);
+        p.ui->uiGamma->value(gamma);
+        p.ui->uiGammaInput->value(gamma);
+        p.ui->uiSaturation->value(saturation);
+        p.ui->uiSaturationInput->value(saturation);
+
         redraw();
     }
 
@@ -2062,7 +2100,6 @@ namespace mrv
     {
         TLRENDER_P();
 
-
         p.displayOptions.resize(p.videoData.size());
         if (p.displayOptions.empty())
         {
@@ -2358,7 +2395,7 @@ namespace mrv
         const timeline::DisplayOptions& d) noexcept
     {
         TLRENDER_P();
-        
+
         for (auto& display : p.displayOptions)
         {
             display = d;
@@ -2405,23 +2442,21 @@ namespace mrv
     }
 
     void TimelineViewport::_updateMonitorDisplayView(
-        const int screen,
-        const timeline::OCIOOptions& o) const noexcept
+        const int screen, const timeline::OCIOOptions& o) const noexcept
     {
         TLRENDER_P();
-        
+
         if (this != p.ui->uiView)
             return;
 
         if (screen != p.previous_screen)
         {
             p.previous_screen = screen;
-            const std::string& combined =
-                ocio::combineView(o.display, o.view);
+            const std::string& combined = ocio::combineView(o.display, o.view);
             p.ui->uiOCIOView->copy_label(combined.c_str());
         }
     }
-    
+
     void TimelineViewport::hsv_to_info(
         const image::Color4f& hsv, area::Info& info) const noexcept
     {
diff --git a/src/lib/mrvPy/Cmds.cpp b/src/lib/mrvPy/Cmds.cpp
index 8d1a49cba..c2cbb4fee 100644
--- a/src/lib/mrvPy/Cmds.cpp
+++ b/src/lib/mrvPy/Cmds.cpp
@@ -110,7 +110,6 @@ namespace mrv2
         void
         compare(const int itemA, const int itemB, timeline::CompareMode mode)
         {
-
             auto model = filesModel();
 
             auto o = model->observeCompareOptions()->get();
@@ -224,7 +223,7 @@ namespace mrv2
             ViewerUI* ui = App::ui;
             toggle_data_window_cb(nullptr, ui);
         }
-        
+
         void toggleDisplayWindow()
         {
             ViewerUI* ui = App::ui;
@@ -236,13 +235,13 @@ namespace mrv2
             ViewerUI* ui = App::ui;
             toggle_safe_areas_cb(nullptr, ui);
         }
-        
+
         void toggleIgnoreDisplayWindow()
         {
             ViewerUI* ui = App::ui;
             toggle_ignore_display_window_cb(nullptr, ui);
         }
-        
+
         void toggleAutoNormalize()
         {
             ViewerUI* ui = App::ui;
@@ -357,7 +356,7 @@ namespace mrv2
             }
             return out;
         }
-        
+
         /**
          * \brief Refresh the UI.
          *
@@ -531,15 +530,15 @@ Used to run main commands and get arguments and set the display, image, compare,
     cmds.def(
         "setMute", &mrv2::cmd::setMute, _("Set the muting of the audio."),
         py::arg("mute"));
-    
+
     cmds.def(
         "toggleAutoNormalize", &mrv2::cmd::toggleAutoNormalize,
         _("Toggle Image Auto Normalize."));
-    
+
     cmds.def(
         "toggleDataWindow", &mrv2::cmd::toggleDataWindow,
         _("Toggle Data Window."));
-    
+
     cmds.def(
         "toggleDisplayWindow", &mrv2::cmd::toggleDisplayWindow,
         _("Toggle Display Window."));
@@ -547,15 +546,15 @@ Used to run main commands and get arguments and set the display, image, compare,
     cmds.def(
         "toggleIgnoreDisplayWindow", &mrv2::cmd::toggleIgnoreDisplayWindow,
         _("Toggle Ignored Display Window on OpenEXRs."));
-    
+
     cmds.def(
         "toggleInvalidValues", &mrv2::cmd::toggleInvalidValues,
         _("Toggle Image invalid values."));
-    
+
     cmds.def(
         "toggleSafeAreas", &mrv2::cmd::toggleSafeAreas,
         _("Toggle Safe Areas."));
-    
+
     cmds.def("volume", &mrv2::cmd::volume, _("Get the playback volume."));
 
     cmds.def(