diff --git a/src/Mod/Import/Gui/ExportOCAFGui.cpp b/src/Mod/Import/Gui/ExportOCAFGui.cpp
index a640e3808a..91fdb54a09 100644
--- a/src/Mod/Import/Gui/ExportOCAFGui.cpp
+++ b/src/Mod/Import/Gui/ExportOCAFGui.cpp
@@ -21,22 +21,25 @@
  *                                                                         *
  **************************************************************************/
 
-
 #include "ExportOCAFGui.h"
 #include <Gui/Application.h>
 #include <Mod/Part/Gui/ViewProvider.h>
 
 using namespace ImportGui;
 
-
 ExportOCAFGui::ExportOCAFGui(Handle(TDocStd_Document) hDoc, bool explicitPlacement)
     : ExportOCAF(hDoc, explicitPlacement)
 {}
 
 void ExportOCAFGui::findColors(Part::Feature* part, std::vector<Base::Color>& colors) const
 {
-    Gui::ViewProvider* vp = Gui::Application::Instance->getViewProvider(part);
-    if (vp && vp->isDerivedFrom<PartGui::ViewProviderPartExt>()) {
-        colors = static_cast<PartGui::ViewProviderPartExt*>(vp)->ShapeAppearance.getDiffuseColors();
+    if (auto vp = Gui::Application::Instance->getViewProvider(part)) {
+        if (auto vppe = freecad_cast<PartGui::ViewProviderPartExt*>(vp)) {
+            colors = vppe->ShapeAppearance.getDiffuseColors();
+            auto transp = vppe->ShapeAppearance.getTransparency();
+            for (auto& it : colors) {
+                it.setTransparency(transp);
+            }
+        }
     }
 }
diff --git a/src/Mod/Import/Gui/ImportOCAFGui.cpp b/src/Mod/Import/Gui/ImportOCAFGui.cpp
index 3f8cd1a580..780cefe895 100644
--- a/src/Mod/Import/Gui/ImportOCAFGui.cpp
+++ b/src/Mod/Import/Gui/ImportOCAFGui.cpp
@@ -52,6 +52,15 @@ void ImportOCAFGui::applyFaceColors(Part::Feature* part, const std::vector<Base:
     }
     else {
         vp->ShapeAppearance.setDiffuseColors(colors);
+        std::vector<float> transp;
+        transp.reserve(colors.size());
+        std::transform(
+            colors.cbegin(),
+            colors.cend(),
+            std::back_inserter(transp),
+            [](const Base::Color& col) { return col.transparency(); }
+        );
+        vp->ShapeAppearance.setTransparencies(transp);
     }
 }
 
diff --git a/src/Mod/Part/Gui/ViewProviderExt.cpp b/src/Mod/Part/Gui/ViewProviderExt.cpp
index b632d1b702..3709c3959f 100644
--- a/src/Mod/Part/Gui/ViewProviderExt.cpp
+++ b/src/Mod/Part/Gui/ViewProviderExt.cpp
@@ -759,7 +759,7 @@ std::map<std::string, Base::Color> ViewProviderPartExt::getElementColors(const c
 
     if (!element || !element[0]) {
         auto color = ShapeAppearance.getDiffuseColor();
-        color.setTransparency(Base::fromPercent(Transparency.getValue()));
+        color.setTransparency(ShapeAppearance.getTransparency());
         ret["Face"] = color;
         ret["Edge"] = LineColor.getValue();
         ret["Vertex"] = PointColor.getValue();
@@ -773,18 +773,16 @@ std::map<std::string, Base::Color> ViewProviderPartExt::getElementColors(const c
             color.setTransparency(Base::fromPercent(Transparency.getValue()));
             bool singleColor = true;
             for (int i = 0; i < size; ++i) {
-                Base::Color faceColor = ShapeAppearance.getDiffuseColor(i);
-                faceColor.setTransparency(ShapeAppearance.getTransparency(i));
-                if (faceColor != color) {
-                    ret[std::string(element, 4) + std::to_string(i + 1)] = faceColor;
+                auto color_i = ShapeAppearance.getDiffuseColor(i);
+                color_i.setTransparency(ShapeAppearance.getTransparency(i));
+                if (color_i != color) {
+                    ret[std::string(element, 4) + std::to_string(i + 1)] = color_i;
                 }
-                Base::Color firstFaceColor = ShapeAppearance.getDiffuseColor(0);
-                firstFaceColor.setTransparency(ShapeAppearance.getTransparency(0));
-                singleColor = singleColor && (faceColor == firstFaceColor);
+                singleColor = singleColor && color == color_i;
             }
             if (size > 0 && singleColor) {
                 color = ShapeAppearance.getDiffuseColor(0);
-                color.setTransparency(ShapeAppearance.getTransparency(0));
+                color.setTransparency(ShapeAppearance.getTransparency());
                 ret.clear();
             }
             ret["Face"] = color;
@@ -792,13 +790,17 @@ std::map<std::string, Base::Color> ViewProviderPartExt::getElementColors(const c
         else {
             int idx = atoi(element + 4);
             if (idx > 0 && idx <= size) {
-                ret[element] = ShapeAppearance.getDiffuseColor(idx - 1);
+                auto color_i = ShapeAppearance.getDiffuseColor(idx - 1);
+                color_i.setTransparency(ShapeAppearance.getTransparency(idx - 1));
+                ret[element] = color_i;
             }
             else {
-                ret[element] = ShapeAppearance.getDiffuseColor();
+                auto color_i = ShapeAppearance.getDiffuseColor();
+                color_i.setTransparency(ShapeAppearance.getTransparency());
+                ret[element] = color_i;
             }
             if (size == 1) {
-                ret[element].setTransparency(Base::fromPercent(Transparency.getValue()));
+                ret[element].setTransparency(ShapeAppearance.getTransparency());
             }
         }
     }