Gui: add explicit transparency specification

src/Mod/Fem/Gui/ViewProviderFemMesh.cpp

@@ -197,6 +197,7 @@ ViewProviderFemMesh::ViewProviderFemMesh()
     LineWidth.setConstraints(&floatRange);
 
     ShapeColor.setValue(App::Color(1.0f, 0.7f, 0.0f));
+    Transparency.setValue(0);
     ADD_PROPERTY(BackfaceCulling, (true));
     ADD_PROPERTY(ShowInner, (false));
     ADD_PROPERTY(MaxFacesShowInner, (50000));

src/Mod/Import/Gui/dxf/ImpExpDxfGui.cpp

@@ -82,6 +82,7 @@ void ImpExpDxfReadGui::ApplyGuiStyles(Part::Feature* object)
     view->LineColor.setValue(color);
     view->PointColor.setValue(color);
     view->ShapeColor.setValue(color);
+    view->Transparency.setValue(0);
 }
 
 void ImpExpDxfReadGui::ApplyGuiStyles(App::FeaturePython* object)

src/Mod/Part/Gui/DlgProjectionOnSurface.cpp

@@ -638,6 +638,7 @@ void PartGui::DlgProjectionOnSurface::show_projected_shapes(const std::vector<SS
     vp->LineColor.setValue(0x8ae23400);
     vp->ShapeColor.setValue(0x8ae23400);
     vp->PointColor.setValue(0x8ae23400);
+    vp->Transparency.setValue(0);
   }
 }