diff --git a/src/app/gfx/bitmap.cc b/src/app/gfx/bitmap.cc
index 1c20c956..c8e6a21d 100644
--- a/src/app/gfx/bitmap.cc
+++ b/src/app/gfx/bitmap.cc
@@ -106,9 +106,14 @@ void Bitmap::CreateTexture(std::shared_ptr<SDL_Renderer> renderer) {
 void Bitmap::ApplyPalette(const SNESPalette &palette) {
   palette_ = palette;
   for (int i = 0; i < palette.size_; ++i) {
-    surface_->format->palette->colors[i].r = palette.GetColor(i).rgb.x;
-    surface_->format->palette->colors[i].g = palette.GetColor(i).rgb.y;
-    surface_->format->palette->colors[i].b = palette.GetColor(i).rgb.z;
+    if (palette.GetColor(i).transparent) {
+      surface_->format->palette->colors[i].a = 0;
+    } else {
+      surface_->format->palette->colors[i].r = palette.GetColor(i).rgb.x;
+      surface_->format->palette->colors[i].g = palette.GetColor(i).rgb.y;
+      surface_->format->palette->colors[i].b = palette.GetColor(i).rgb.z;
+      surface_->format->palette->colors[i].a = 255;
+    }
   }
 }
 
diff --git a/src/app/gfx/snes_palette.h b/src/app/gfx/snes_palette.h
index bee951a9..f0481184 100644
--- a/src/app/gfx/snes_palette.h
+++ b/src/app/gfx/snes_palette.h
@@ -45,7 +45,9 @@ struct SNESColor {
   void setRgb(ImVec4);
   void setSNES(snes_color);
   void setSNES(uint16_t);
+  void setTransparent(bool t) { transparent = t; }
 
+  bool transparent = false;
   uint16_t snes = 0;
   ImVec4 rgb;
 };
diff --git a/src/app/zelda3/overworld_map.cc b/src/app/zelda3/overworld_map.cc
index 0c6388b5..d54ec9c3 100644
--- a/src/app/zelda3/overworld_map.cc
+++ b/src/app/zelda3/overworld_map.cc
@@ -134,10 +134,9 @@ void SetColorsPalette(ROM& rom, int index, gfx::SNESPalette& current,
 
   current.Create(new_palette);
   // ColorPalette pal = GFX.editort16Bitmap.Palette;
-  // for (int i = 0; i < 256; i++) {
-  //   pal.Entries[i] = new_palette[i];
-  //   pal.Entries[(i / 16) * 16] = Color.Transparent;
-  // }
+  for (int i = 0; i < 256; i++) {
+    current[(i / 16) * 16].setTransparent(true);
+  }
 
   // GFX.mapgfx16Bitmap.Palette = pal;
   // GFX.mapblockset16Bitmap.Palette = pal;
@@ -334,8 +333,7 @@ void OverworldMap::LoadPalette() {
 
   uchar pal0 = 0;
 
-  uchar pal1 =
-      rom_[core::overworldMapPaletteGroup + (area_palette_ * 4)];  // aux1
+  uchar pal1 = rom_[core::overworldMapPaletteGroup + (area_palette_ * 4)];
   uchar pal2 =
       rom_[core::overworldMapPaletteGroup + (area_palette_ * 4) + 1];  // aux2
   uchar pal3 = rom_[core::overworldMapPaletteGroup + (area_palette_ * 4) +