diff --git a/Source/EmberCL/OpenCLInfo.cpp b/Source/EmberCL/OpenCLInfo.cpp
index 43cbf9d..73ceff0 100644
--- a/Source/EmberCL/OpenCLInfo.cpp
+++ b/Source/EmberCL/OpenCLInfo.cpp
@@ -184,7 +184,7 @@ size_t OpenCLInfo::TotalDeviceIndex(size_t platform, size_t device) const
 }
 
 /// <summary>
-/// Create a context that is optionally shared with OpenGL and plact it in the
+/// Create a context that is optionally shared with OpenGL and place it in the
 /// passed in context ref parameter.
 /// </summary>
 /// <param name="platform">The platform object to create the context on</param>
diff --git a/Source/Fractorium/FractoriumXformsColor.cpp b/Source/Fractorium/FractoriumXformsColor.cpp
index cddb4f7..30034fc 100644
--- a/Source/Fractorium/FractoriumXformsColor.cpp
+++ b/Source/Fractorium/FractoriumXformsColor.cpp
@@ -20,10 +20,10 @@ void Fractorium::InitXformsColorUI()
 	connect(ui.ToggleColorIndicesButton, SIGNAL(clicked(bool)), this, SLOT(OnToggleColorIndicesButtonClicked(bool)), Qt::QueuedConnection);
 	connect(ui.RandomColorSpeedButton,   SIGNAL(clicked(bool)), this, SLOT(OnRandomColorSpeedButtonClicked(bool)),   Qt::QueuedConnection);
 	connect(ui.ToggleColorSpeedButton,   SIGNAL(clicked(bool)), this, SLOT(OnToggleColorSpeedButtonClicked(bool)),   Qt::QueuedConnection);
-	SetupSpinner<DoubleSpinBox, double>(ui.XformColorIndexTable,  this, row, 1, m_XformColorIndexSpin,  spinHeight,  0, 1, 0.01, SIGNAL(valueChanged(double)), SLOT(OnXformColorIndexChanged(double)),  false,   0,   1,   0);
-	SetupSpinner<DoubleSpinBox, double>(ui.XformColorValuesTable, this, row, 1, m_XformColorSpeedSpin,  spinHeight, -1, 1,  0.1, SIGNAL(valueChanged(double)), SLOT(OnXformColorSpeedChanged(double)),  true,  0.5, 0.5, 0.5);
-	SetupSpinner<DoubleSpinBox, double>(ui.XformColorValuesTable, this, row, 1, m_XformOpacitySpin,	    spinHeight,  0, 1,  0.1, SIGNAL(valueChanged(double)), SLOT(OnXformOpacityChanged(double)),	    true,    1,   1,   0);
-	SetupSpinner<DoubleSpinBox, double>(ui.XformColorValuesTable, this, row, 1, m_XformDirectColorSpin, spinHeight,  0, 1,  0.1, SIGNAL(valueChanged(double)), SLOT(OnXformDirectColorChanged(double)),	true,	 1,   1,   0);
+	SetupSpinner<DoubleSpinBox, double>(ui.XformColorIndexTable,  this, row, 1, m_XformColorIndexSpin,  spinHeight,  0, 1, 0.01, SIGNAL(valueChanged(double)), SLOT(OnXformColorIndexChanged(double)),  false,   0,   1, 0);
+	SetupSpinner<DoubleSpinBox, double>(ui.XformColorValuesTable, this, row, 1, m_XformColorSpeedSpin,  spinHeight, -1, 1,  0.1, SIGNAL(valueChanged(double)), SLOT(OnXformColorSpeedChanged(double)),   true, 0.5, 0.5, 0);
+	SetupSpinner<DoubleSpinBox, double>(ui.XformColorValuesTable, this, row, 1, m_XformOpacitySpin,	    spinHeight,  0, 1,  0.1, SIGNAL(valueChanged(double)), SLOT(OnXformOpacityChanged(double)),	     true,   1,   1, 0);
+	SetupSpinner<DoubleSpinBox, double>(ui.XformColorValuesTable, this, row, 1, m_XformDirectColorSpin, spinHeight,  0, 1,  0.1, SIGNAL(valueChanged(double)), SLOT(OnXformDirectColorChanged(double)),	 true,	 1,   1, 0);
 	m_XformColorIndexSpin->setDecimals(3);
 	m_XformColorSpeedSpin->setDecimals(3);
 	m_XformOpacitySpin->setDecimals(3);
diff --git a/Source/Fractorium/GLWidget.cpp b/Source/Fractorium/GLWidget.cpp
index 6f1f516..779810f 100644
--- a/Source/Fractorium/GLWidget.cpp
+++ b/Source/Fractorium/GLWidget.cpp
@@ -254,7 +254,11 @@ void GLWidget::paintGL()
 		glEnable(GL_BLEND);
 		glEnable(GL_LINE_SMOOTH);
 		glEnable(GL_POINT_SMOOTH);
+#if defined (__APPLE__) || defined(MACOSX)
+		glBlendFunc(GL_SRC_ALPHA, GL_ONE);
+#else
 		glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ZERO);
+#endif
 		glMatrixMode(GL_PROJECTION);
 		glPushMatrix();
 		glLoadIdentity();
@@ -788,7 +792,11 @@ bool GLWidget::Allocate(bool force)
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+#if defined (__APPLE__) || defined(MACOSX)
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, m_TexWidth, m_TexHeight, 0, GL_RGB, GL_FLOAT, nullptr);
+#else
 		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, m_TexWidth, m_TexHeight, 0, GL_RGBA, GL_FLOAT, nullptr);
+#endif
 		alloc = true;
 	}
 
@@ -929,6 +937,7 @@ void GLEmberController<T>::DrawGrid()
 	m_GL->glColor4f(0.0f,   0.5f, 0.0f, alpha);
 	m_GL->glVertex2f(0.0f,  0.0f);
 	m_GL->glVertex2f(0.0f,  yLow);
+	m_GL->glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
 	m_GL->glEnd();
 	m_GL->glPopMatrix();
 }
@@ -980,6 +989,7 @@ void GLEmberController<T>::DrawAffine(Xform<T>* xform, bool pre, bool selected)
 	m_GL->glVertex2f(0.0f, 0.0f);
 	m_GL->glVertex2f(1.0f, 0.0f);
 	m_GL->glVertex2f(0.0f, 1.0f);
+	m_GL->glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
 	m_GL->glEnd();
 	m_GL->glPopMatrix();
 }