diff --git a/source/blender/editors/interface/interface_icons.c b/source/blender/editors/interface/interface_icons.c
--- a/source/blender/editors/interface/interface_icons.c
+++ b/source/blender/editors/interface/interface_icons.c
@@ -151,6 +151,7 @@ typedef struct IconTexture {
 typedef struct IconType {
   int type;
   int theme_color;
+  char *name;
 } IconType;
 
 /* ******************* STATIC LOCAL VARS ******************* */
@@ -161,19 +162,19 @@ static IconTexture icongltex = {{NULL, NULL}, 0, 0, 0, 0.0f, 0.0f};
 
 #ifndef WITH_HEADLESS
 
-static const IconType icontypes[] = {
-#  define DEF_ICON(name) {ICON_TYPE_MONO_TEXTURE, 0},
-#  define DEF_ICON_SCENE(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_SCENE},
-#  define DEF_ICON_COLLECTION(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_COLLECTION},
-#  define DEF_ICON_OBJECT(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_OBJECT},
-#  define DEF_ICON_OBJECT_DATA(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_OBJECT_DATA},
-#  define DEF_ICON_MODIFIER(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_MODIFIER},
-#  define DEF_ICON_SHADING(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_SHADING},
-#  define DEF_ICON_FOLDER(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_FOLDER},
-#  define DEF_ICON_FUND(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_FUND},
-#  define DEF_ICON_VECTOR(name) {ICON_TYPE_VECTOR, 0},
-#  define DEF_ICON_COLOR(name) {ICON_TYPE_COLOR_TEXTURE, 0},
-#  define DEF_ICON_BLANK(name) {ICON_TYPE_BLANK, 0},
+static IconType icontypes[] = {
+#  define DEF_ICON(name) {ICON_TYPE_MONO_TEXTURE, 0, #name},
+#  define DEF_ICON_SCENE(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_SCENE, #name},
+#  define DEF_ICON_COLLECTION(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_COLLECTION, #name},
+#  define DEF_ICON_OBJECT(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_OBJECT, #name},
+#  define DEF_ICON_OBJECT_DATA(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_OBJECT_DATA, #name},
+#  define DEF_ICON_MODIFIER(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_MODIFIER, #name},
+#  define DEF_ICON_SHADING(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_SHADING, #name},
+#  define DEF_ICON_FOLDER(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_FOLDER, #name},
+#  define DEF_ICON_FUND(name) {ICON_TYPE_MONO_TEXTURE, TH_ICON_FUND, #name},
+#  define DEF_ICON_VECTOR(name) {ICON_TYPE_VECTOR, 0, #name},
+#  define DEF_ICON_COLOR(name) {ICON_TYPE_COLOR_TEXTURE, 0, #name},
+#  define DEF_ICON_BLANK(name) {ICON_TYPE_BLANK, 0, #name},
 #  include "UI_icons.h"
 };
 
@@ -830,6 +831,52 @@ static void free_icons_textures(void)
   }
 }
 
+static void UI_icons_load_external_file(ImBuf *bbuf, const int resolution_divider)
+{
+  char dir_name[FILE_MAXFILE];
+  BLI_snprintf(dir_name, sizeof(dir_name), "blender_icons%u", 32 / resolution_divider);
+  const char *icon_directory = BKE_appdir_folder_id(BLENDER_DATAFILES, dir_name);
+
+  if (!BLI_exists(icon_directory)) {
+    return;
+  }
+
+  for (int y = 0; y < ICON_GRID_ROWS; y++) {
+    for (int x = 0; x < ICON_GRID_COLS; x++) {
+      IconType *icontype = &icontypes[y * ICON_GRID_COLS + x];
+
+      // is_color
+      if (0) {
+        icontype->type = ICON_TYPE_COLOR_TEXTURE;
+      }
+
+      char icon_file[FILE_MAXFILE];
+      BLI_snprintf(icon_file, sizeof(icon_file), "icon%u_%s.png", 32 / resolution_divider, icontype->name);
+      char icon_filepath[FILE_MAX];
+      BLI_join_dirfile(icon_filepath, sizeof(icon_filepath), icon_directory, icon_file);
+
+      ImBuf *ibuf = IMB_loadiffname(icon_filepath, IB_rect, NULL);
+
+      if (ibuf) {
+        const int size_w = ICON_GRID_W / resolution_divider;
+        const int size_h = ICON_GRID_H / resolution_divider;
+        const int margin = ICON_GRID_MARGIN / resolution_divider;
+
+        if (ibuf->x == size_w && ibuf->y == size_h) {
+          for (int k = 0; k < size_h; k++) {
+            memcpy(&bbuf->rect[(k + y * (size_h + margin) + margin) * bbuf->x +
+                               x * (size_w + margin) + margin],
+                   &ibuf->rect[k * ibuf->x],
+                   ibuf->x * sizeof(int));
+          }
+        }
+
+        IMB_freeImBuf(ibuf);
+      }
+    }
+  }
+}
+
 /* Reload the textures for internal icons.
  * This function will release the previous textures. */
 void UI_icons_reload_internal_textures(void)
@@ -846,6 +893,9 @@ void UI_icons_reload_internal_textures(void)
                                    NULL,
                                    "<blender icons>");
   }
+
+  UI_icons_load_external_file(b16buf, 2);
+
   if (b16buf) {
     if (need_icons_with_border) {
       b16buf_border = create_mono_icon_with_border(b16buf, 2, icon_border_intensity);
@@ -861,6 +911,9 @@ void UI_icons_reload_internal_textures(void)
                                    NULL,
                                    "<blender icons>");
   }
+
+  UI_icons_load_external_file(b32buf, 1);
+
   if (b32buf) {
     if (need_icons_with_border) {
       b32buf_border = create_mono_icon_with_border(b32buf, 1, icon_border_intensity);