diff --git a/PowerEditor/src/WinControls/FunctionList/functionListPanel.cpp b/PowerEditor/src/WinControls/FunctionList/functionListPanel.cpp
index b5e5bbd1..db230d9a 100644
--- a/PowerEditor/src/WinControls/FunctionList/functionListPanel.cpp
+++ b/PowerEditor/src/WinControls/FunctionList/functionListPanel.cpp
@@ -429,7 +429,7 @@ void FunctionListPanel::notified(LPNMHDR notification)
 BOOL FunctionListPanel::setTreeViewImageList(int root_id, int node_id, int leaf_id)
 {
 	HBITMAP hbmp;
-
+	COLORREF maskColour = RGB(192, 192, 192);
 	const int nbBitmaps = 3;
 
 	// Creation of image list
@@ -440,19 +440,19 @@ BOOL FunctionListPanel::setTreeViewImageList(int root_id, int node_id, int leaf_
 	hbmp = LoadBitmap(_hInst, MAKEINTRESOURCE(root_id));
 	if (hbmp == NULL)
 		return FALSE;
-	ImageList_Add(_hTreeViewImaLst, hbmp, (HBITMAP)NULL);
+	ImageList_AddMasked(_hTreeViewImaLst, hbmp, maskColour);
 	DeleteObject(hbmp);
 
 	hbmp = LoadBitmap(_hInst, MAKEINTRESOURCE(node_id));
 	if (hbmp == NULL)
 		return FALSE;
-	ImageList_Add(_hTreeViewImaLst, hbmp, (HBITMAP)NULL);
+	ImageList_AddMasked(_hTreeViewImaLst, hbmp, maskColour);
 	DeleteObject(hbmp);
 
 	hbmp = LoadBitmap(_hInst, MAKEINTRESOURCE(leaf_id));
 	if (hbmp == NULL)
 		return FALSE;
-	ImageList_Add(_hTreeViewImaLst, hbmp, (HBITMAP)NULL);
+	ImageList_AddMasked(_hTreeViewImaLst, hbmp, maskColour);
 	DeleteObject(hbmp);
 
 	if (ImageList_GetImageCount(_hTreeViewImaLst) < nbBitmaps)
diff --git a/PowerEditor/src/WinControls/ProjectPanel/ProjectPanel.cpp b/PowerEditor/src/WinControls/ProjectPanel/ProjectPanel.cpp
index 4184a527..edcac31e 100644
--- a/PowerEditor/src/WinControls/ProjectPanel/ProjectPanel.cpp
+++ b/PowerEditor/src/WinControls/ProjectPanel/ProjectPanel.cpp
@@ -257,7 +257,7 @@ void ProjectPanel::initMenus()
 BOOL ProjectPanel::setImageList(int root_clean_id, int root_dirty_id, int project_id, int open_node_id, int closed_node_id, int leaf_id, int ivalid_leaf_id) 
 {
 	HBITMAP hbmp;
-
+	COLORREF maskColour = RGB(192, 192, 192);
 	const int nbBitmaps = 7;
 
 	// Creation of image list
@@ -268,43 +268,43 @@ BOOL ProjectPanel::setImageList(int root_clean_id, int root_dirty_id, int projec
 	hbmp = LoadBitmap(_hInst, MAKEINTRESOURCE(root_clean_id));
 	if (hbmp == NULL)
 		return FALSE;
-	ImageList_Add(_hImaLst, hbmp, (HBITMAP)NULL);
+	ImageList_AddMasked(_hImaLst, hbmp, maskColour);
 	DeleteObject(hbmp);
 
 	hbmp = LoadBitmap(_hInst, MAKEINTRESOURCE(root_dirty_id));
 	if (hbmp == NULL)
 		return FALSE;
-	ImageList_Add(_hImaLst, hbmp, (HBITMAP)NULL);
+	ImageList_AddMasked(_hImaLst, hbmp, maskColour);
 	DeleteObject(hbmp);
 
 	hbmp = LoadBitmap(_hInst, MAKEINTRESOURCE(project_id));
 	if (hbmp == NULL)
 		return FALSE;
-	ImageList_Add(_hImaLst, hbmp, (HBITMAP)NULL);
+	ImageList_AddMasked(_hImaLst, hbmp, maskColour);
 	DeleteObject(hbmp);
 
 	hbmp = LoadBitmap(_hInst, MAKEINTRESOURCE(open_node_id));
 	if (hbmp == NULL)
 		return FALSE;
-	ImageList_Add(_hImaLst, hbmp, (HBITMAP)NULL);
+	ImageList_AddMasked(_hImaLst, hbmp, maskColour);
 	DeleteObject(hbmp);
 
 	hbmp = LoadBitmap(_hInst, MAKEINTRESOURCE(closed_node_id));
 	if (hbmp == NULL)
 		return FALSE;
-	ImageList_Add(_hImaLst, hbmp, (HBITMAP)NULL);
+	ImageList_AddMasked(_hImaLst, hbmp, maskColour);
 	DeleteObject(hbmp);
 
 	hbmp = LoadBitmap(_hInst, MAKEINTRESOURCE(leaf_id));
 	if (hbmp == NULL)
 		return FALSE;
-	ImageList_Add(_hImaLst, hbmp, (HBITMAP)NULL);
+	ImageList_AddMasked(_hImaLst, hbmp, maskColour);
 	DeleteObject(hbmp);
 
 	hbmp = LoadBitmap(_hInst, MAKEINTRESOURCE(ivalid_leaf_id));
 	if (hbmp == NULL)
 		return FALSE;
-	ImageList_Add(_hImaLst, hbmp, (HBITMAP)NULL);
+	ImageList_AddMasked(_hImaLst, hbmp, maskColour);
 	DeleteObject(hbmp);
 
 	if (ImageList_GetImageCount(_hImaLst) < nbBitmaps)
diff --git a/PowerEditor/src/icons/funcList_leaf.bmp b/PowerEditor/src/icons/funcList_leaf.bmp
index 3c79301b..0ff2ba6b 100644
Binary files a/PowerEditor/src/icons/funcList_leaf.bmp and b/PowerEditor/src/icons/funcList_leaf.bmp differ
diff --git a/PowerEditor/src/icons/funcList_node.bmp b/PowerEditor/src/icons/funcList_node.bmp
index d8546514..c35f6e4d 100644
Binary files a/PowerEditor/src/icons/funcList_node.bmp and b/PowerEditor/src/icons/funcList_node.bmp differ
diff --git a/PowerEditor/src/icons/project_file.bmp b/PowerEditor/src/icons/project_file.bmp
index d97237d6..17ff75e0 100644
Binary files a/PowerEditor/src/icons/project_file.bmp and b/PowerEditor/src/icons/project_file.bmp differ
diff --git a/PowerEditor/src/icons/project_file_invalid.bmp b/PowerEditor/src/icons/project_file_invalid.bmp
index 2911b5e3..a6377ffd 100644
Binary files a/PowerEditor/src/icons/project_file_invalid.bmp and b/PowerEditor/src/icons/project_file_invalid.bmp differ
diff --git a/PowerEditor/src/icons/project_folder_close.bmp b/PowerEditor/src/icons/project_folder_close.bmp
index 6d6fad29..a00d454c 100644
Binary files a/PowerEditor/src/icons/project_folder_close.bmp and b/PowerEditor/src/icons/project_folder_close.bmp differ
diff --git a/PowerEditor/src/icons/project_folder_open.bmp b/PowerEditor/src/icons/project_folder_open.bmp
index 35db35ce..5aae97e6 100644
Binary files a/PowerEditor/src/icons/project_folder_open.bmp and b/PowerEditor/src/icons/project_folder_open.bmp differ
diff --git a/PowerEditor/src/icons/project_root.bmp b/PowerEditor/src/icons/project_root.bmp
index f50cbb9e..f47dbc55 100644
Binary files a/PowerEditor/src/icons/project_root.bmp and b/PowerEditor/src/icons/project_root.bmp differ
diff --git a/PowerEditor/src/icons/project_work_space.bmp b/PowerEditor/src/icons/project_work_space.bmp
index f73e3569..13d5eacc 100644
Binary files a/PowerEditor/src/icons/project_work_space.bmp and b/PowerEditor/src/icons/project_work_space.bmp differ
diff --git a/PowerEditor/src/icons/project_work_space_dirty.bmp b/PowerEditor/src/icons/project_work_space_dirty.bmp
index 6c539f01..7685aba0 100644
Binary files a/PowerEditor/src/icons/project_work_space_dirty.bmp and b/PowerEditor/src/icons/project_work_space_dirty.bmp differ