diff --git a/app/panel/scope/scope.cpp b/app/panel/scope/scope.cpp
index ef6678311..a23898f36 100644
--- a/app/panel/scope/scope.cpp
+++ b/app/panel/scope/scope.cpp
@@ -94,6 +94,11 @@ void ScopePanel::SetBuffer(Frame *frame)
   histogram_->SetBuffer(frame);
 }
 
+void ScopePanel::SetColorProcessor(ColorProcessorPtr processor)
+{
+  histogram_->SetColorProcessor(processor);
+}
+
 void ScopePanel::Retranslate()
 {
   SetTitle(tr("Scope"));
diff --git a/app/panel/scope/scope.h b/app/panel/scope/scope.h
index 48c63518c..c3aaab2e8 100644
--- a/app/panel/scope/scope.h
+++ b/app/panel/scope/scope.h
@@ -54,6 +54,8 @@ public slots:
 
   void SetBuffer(Frame* frame);
 
+  void SetColorProcessor(ColorProcessorPtr processor);
+
 protected:
   virtual void Retranslate() override;
 
diff --git a/app/panel/viewer/viewerbase.cpp b/app/panel/viewer/viewerbase.cpp
index 937692788..40a96eea7 100644
--- a/app/panel/viewer/viewerbase.cpp
+++ b/app/panel/viewer/viewerbase.cpp
@@ -107,6 +107,7 @@ void ViewerPanelBase::CreateScopePanel(ScopePanel::Type type)
   // Connect viewer widget texture drawing to scope panel
   connect(vw, &ViewerWidget::DrewManagedTexture, p, &ScopePanel::DrewManagedTexture);
   connect(vw, &ViewerWidget::LoadedBuffer, p, &ScopePanel::SetBuffer);
+  connect(vw, &ViewerWidget::ColorProcessorChanged, p, &ScopePanel::SetColorProcessor);
 
   if (!scope_panel_count_) {
     vw->SetEmitDrewManagedTextureEnabled(true);
diff --git a/app/render/colorprocessor.cpp b/app/render/colorprocessor.cpp
index d0d1eb60a..47773bac5 100644
--- a/app/render/colorprocessor.cpp
+++ b/app/render/colorprocessor.cpp
@@ -66,7 +66,7 @@ ColorProcessor::ColorProcessor(ColorManager *config,
   processor_ = config->GetConfig()->getProcessor(transform, dir);
 }
 
-void ColorProcessor::ConvertFrame(FramePtr f)
+void ColorProcessor::ConvertFrame(Frame *f)
 {
   OCIO::PackedImageDesc img(reinterpret_cast<float*>(f->data()), f->width(), f->height(), PixelFormat::ChannelCount(f->format()));
 
@@ -94,4 +94,9 @@ OCIO::ConstProcessorRcPtr ColorProcessor::GetProcessor()
   return processor_;
 }
 
+void ColorProcessor::ConvertFrame(FramePtr f)
+{
+  ConvertFrame(f.get());
+}
+
 OLIVE_NAMESPACE_EXIT
diff --git a/app/render/colorprocessor.h b/app/render/colorprocessor.h
index 1fe5ac02b..23f7adaf1 100644
--- a/app/render/colorprocessor.h
+++ b/app/render/colorprocessor.h
@@ -65,6 +65,7 @@ public:
   OCIO::ConstProcessorRcPtr GetProcessor();
 
   void ConvertFrame(FramePtr f);
+  void ConvertFrame(Frame* f);
 
   Color ConvertColor(Color in);
 
diff --git a/app/widget/scope/histogram/histogram.cpp b/app/widget/scope/histogram/histogram.cpp
index a4c9097cd..af1d49718 100644
--- a/app/widget/scope/histogram/histogram.cpp
+++ b/app/widget/scope/histogram/histogram.cpp
@@ -30,7 +30,8 @@ OLIVE_NAMESPACE_ENTER
 
 HistogramScope::HistogramScope(QWidget* parent) :
   QOpenGLWidget(parent),
-  buffer_(nullptr)
+  buffer_(nullptr),
+  processor_(nullptr)
 {
   connect(&worker_, &HistogramScopeWorker::Finished, this, &HistogramScope::FinishedProcessing, Qt::QueuedConnection);
   worker_.start(QThread::IdlePriority);
@@ -45,12 +46,18 @@ HistogramScope::~HistogramScope()
 
 void HistogramScope::SetBuffer(Frame* frame)
 {
-  // We'll be multithreading this, so we make a copy to prevent collisions
   buffer_ = frame;
 
   StartUpdate();
 }
 
+void HistogramScope::SetColorProcessor(ColorProcessorPtr processor)
+{
+  processor_ = processor;
+
+  StartUpdate();
+}
+
 void HistogramScope::FinishedProcessing(QVector<double> red, QVector<double> green, QVector<double> blue)
 {
   red_val_ = red;
@@ -89,14 +96,20 @@ void HistogramScope::resizeEvent(QResizeEvent *e)
 {
   QOpenGLWidget::resizeEvent(e);
 
-  if (buffer_){
-    StartUpdate();
-  }
+  StartUpdate();
 }
 
 void HistogramScope::StartUpdate()
 {
-  worker_.QueueNext(*buffer_, width());
+  if (buffer_) {
+    worker_.QueueNext(*buffer_, processor_, width());
+  } else {
+    // Update with nothing
+    red_val_.clear();
+    green_val_.clear();
+    blue_val_.clear();
+    update();
+  }
 }
 
 HistogramScopeWorker::HistogramScopeWorker() :
@@ -120,10 +133,13 @@ void HistogramScopeWorker::run()
     // Copy values
     Frame f = next_;
     int w = next_width_;
+    ColorProcessorPtr processor = next_processor_;
     next_.destroy();
 
     next_lock_.unlock();
 
+    // Color manage frame
+
     QVector<int> data(w * kRGBChannels, 0);
 
     int max_w = w-1;
@@ -132,6 +148,10 @@ void HistogramScopeWorker::run()
       for (int y=0;y<f.height();y++) {
         Color c = f.get_pixel(x, y);
 
+        if (processor) {
+          c = processor->ConvertColor(c);
+        }
+
         data[qFloor(clamp(c.red(), 0.0f, 1.0f) * max_w)]++;
         data[qFloor(clamp(c.green(), 0.0f, 1.0f) * max_w) + w]++;
         data[qFloor(clamp(c.blue(), 0.0f, 1.0f) * max_w) + w * 2]++;
@@ -165,12 +185,13 @@ void HistogramScopeWorker::run()
   }
 }
 
-void HistogramScopeWorker::QueueNext(const Frame &f, int width)
+void HistogramScopeWorker::QueueNext(const Frame &f, ColorProcessorPtr processor, int width)
 {
   next_lock_.lock();
 
   next_ = f;
   next_width_ = width;
+  next_processor_ = processor;
 
   next_wait_.wakeOne();
 
diff --git a/app/widget/scope/histogram/histogram.h b/app/widget/scope/histogram/histogram.h
index b4b94527e..2da63c8b8 100644
--- a/app/widget/scope/histogram/histogram.h
+++ b/app/widget/scope/histogram/histogram.h
@@ -27,6 +27,7 @@
 #include <QWaitCondition>
 
 #include "codec/frame.h"
+#include "render/colorprocessor.h"
 
 OLIVE_NAMESPACE_ENTER
 
@@ -36,13 +37,15 @@ class HistogramScopeWorker : public QThread
 public:
   HistogramScopeWorker();
 
-  virtual void run() override;
+  // Thread-safe
+  void QueueNext(const Frame& f, ColorProcessorPtr processor, int width);
 
   // Thread-safe
-  void QueueNext(const Frame& f, int width);
-
   void Cancel();
 
+protected:
+  virtual void run() override;
+
 signals:
   void Finished(QVector<double> red, QVector<double> green, QVector<double> blue);
 
@@ -53,6 +56,7 @@ private:
   QWaitCondition next_wait_;
   Frame next_;
   int next_width_;
+  ColorProcessorPtr next_processor_;
 
 };
 
@@ -67,6 +71,8 @@ public:
 public slots:
   void SetBuffer(Frame* frame);
 
+  void SetColorProcessor(ColorProcessorPtr processor);
+
 protected:
 //  virtual void paintEvent(QPaintEvent* e) override;
   virtual void paintGL() override;
@@ -78,6 +84,8 @@ private:
 
   Frame* buffer_;
 
+  ColorProcessorPtr processor_;
+
   QVector<double> red_val_;
 
   QVector<double> green_val_;
diff --git a/app/widget/viewer/viewer.cpp b/app/widget/viewer/viewer.cpp
index 4b8bae2ee..3c90345c2 100644
--- a/app/widget/viewer/viewer.cpp
+++ b/app/widget/viewer/viewer.cpp
@@ -68,6 +68,7 @@ ViewerWidget::ViewerWidget(QWidget *parent) :
   connect(main_widget, &ViewerGLWidget::LoadedBuffer, this, &ViewerWidget::LoadedBuffer);
   connect(main_widget, &ViewerGLWidget::LoadedTexture, this, &ViewerWidget::LoadedTexture);
   connect(main_widget, &ViewerGLWidget::DrewManagedTexture, this, &ViewerWidget::DrewManagedTexture);
+  connect(main_widget, &ViewerGLWidget::ColorProcessorChanged, this, &ViewerWidget::ColorProcessorChanged);
   connect(sizer_, &ViewerSizer::RequestMatrix, main_widget, &ViewerGLWidget::SetMatrix);
   sizer_->SetWidget(main_widget);
   gl_widgets_.append(main_widget);
diff --git a/app/widget/viewer/viewer.h b/app/widget/viewer/viewer.h
index 4fdd590b8..1f790a90e 100644
--- a/app/widget/viewer/viewer.h
+++ b/app/widget/viewer/viewer.h
@@ -159,6 +159,11 @@ signals:
    */
   void RequestScopePanel(ScopePanel::Type type);
 
+  /**
+   * @brief Wrapper for ViewerGLWidget::ColorProcessorChanged()
+   */
+  void ColorProcessorChanged(ColorProcessorPtr processor);
+
 protected:
   virtual void TimebaseChangedEvent(const rational &) override;
   virtual void TimeChangedEvent(const int64_t &) override;
diff --git a/app/widget/viewer/viewerglwidget.cpp b/app/widget/viewer/viewerglwidget.cpp
index 29f65f332..7a2daa238 100644
--- a/app/widget/viewer/viewerglwidget.cpp
+++ b/app/widget/viewer/viewerglwidget.cpp
@@ -489,6 +489,9 @@ void ViewerGLWidget::SetupColorProcessor()
   } else {
     color_service_ = nullptr;
   }
+
+  qDebug() << "Emitting" << std::static_pointer_cast<ColorProcessor>(color_service_).get();
+  emit ColorProcessorChanged(std::static_pointer_cast<ColorProcessor>(color_service_));
 }
 
 void ViewerGLWidget::ContextCleanup()
diff --git a/app/widget/viewer/viewerglwidget.h b/app/widget/viewer/viewerglwidget.h
index 704145c69..03b756bfa 100644
--- a/app/widget/viewer/viewerglwidget.h
+++ b/app/widget/viewer/viewerglwidget.h
@@ -189,6 +189,11 @@ signals:
    */
   void DrewManagedTexture(OpenGLTexture* texture);
 
+  /**
+   * @brief Emitted when the color processor changes
+   */
+  void ColorProcessorChanged(ColorProcessorPtr processor);
+
 protected:
   /**
    * @brief Override the mouse press event simply to emit the DragStarted() signal