diff --git a/libultraship/libultraship/Lib/Fast3D/gfx_direct3d_common.cpp b/libultraship/libultraship/Lib/Fast3D/gfx_direct3d_common.cpp
index a8197b321..2c10e6605 100644
--- a/libultraship/libultraship/Lib/Fast3D/gfx_direct3d_common.cpp
+++ b/libultraship/libultraship/Lib/Fast3D/gfx_direct3d_common.cpp
@@ -311,7 +311,7 @@ void gfx_direct3d_common_build_shader(char buf[4096], size_t& len, size_t& num_f
     if (cc_features.opt_grayscale) {
         append_line(buf, &len, "float intensity = (texel.r + texel.g + texel.b) / 3.0;");
         append_line(buf, &len, "float3 new_texel = input.grayscale.rgb * intensity;");
-        append_line(buf, &len, "texel.rgb = input.grayscale.a > 0 ? lerp(texel.rgb, new_texel, input.grayscale.a) : new_texel;");
+        append_line(buf, &len, "texel.rgb = lerp(texel.rgb, new_texel, input.grayscale.a);");
     }
 
     if (cc_features.opt_alpha && cc_features.opt_noise) {
diff --git a/libultraship/libultraship/Lib/Fast3D/gfx_opengl.cpp b/libultraship/libultraship/Lib/Fast3D/gfx_opengl.cpp
index c8dc4666e..6f3017c15 100644
--- a/libultraship/libultraship/Lib/Fast3D/gfx_opengl.cpp
+++ b/libultraship/libultraship/Lib/Fast3D/gfx_opengl.cpp
@@ -371,7 +371,7 @@ static struct ShaderProgram* gfx_opengl_create_and_load_new_shader(uint64_t shad
     if (cc_features.opt_grayscale) {
         append_line(fs_buf, &fs_len, "float intensity = (texel.r + texel.g + texel.b) / 3.0;");
         append_line(fs_buf, &fs_len, "vec3 new_texel = vGrayscaleColor.rgb * intensity;");
-        append_line(fs_buf, &fs_len, "texel.rgb = vGrayscaleColor.a > 0 ? mix(texel.rgb, new_texel, vGrayscaleColor.a) : new_texel;");
+        append_line(fs_buf, &fs_len, "texel.rgb = mix(texel.rgb, new_texel, vGrayscaleColor.a);");
     }
 
     if (cc_features.opt_alpha) {
diff --git a/soh/src/overlays/misc/ovl_kaleido_scope/z_kaleido_equipment.c b/soh/src/overlays/misc/ovl_kaleido_scope/z_kaleido_equipment.c
index ba981c58f..5b90725e1 100644
--- a/soh/src/overlays/misc/ovl_kaleido_scope/z_kaleido_equipment.c
+++ b/soh/src/overlays/misc/ovl_kaleido_scope/z_kaleido_equipment.c
@@ -578,7 +578,7 @@ void KaleidoScope_DrawEquipment(GlobalContext* globalCtx) {
                 int itemId = ITEM_SWORD_KOKIRI + temp;
                 bool not_acquired = (gItemAgeReqs[itemId] != 9) && (gItemAgeReqs[itemId] != gSaveContext.linkAge);
                 if (not_acquired) {
-                    gsDPSetGrayscaleColor(POLY_KAL_DISP++, 109, 109, 109, 0);
+                    gsDPSetGrayscaleColor(POLY_KAL_DISP++, 109, 109, 109, 255);
                     gsSPGrayscale(POLY_KAL_DISP++, true);
                 }
                 KaleidoScope_DrawQuadTextureRGBA32(globalCtx->state.gfxCtx, gItemIcons[itemId], 32, 32, point);
diff --git a/soh/src/overlays/misc/ovl_kaleido_scope/z_kaleido_item.c b/soh/src/overlays/misc/ovl_kaleido_scope/z_kaleido_item.c
index 26f37deb9..52c04908f 100644
--- a/soh/src/overlays/misc/ovl_kaleido_scope/z_kaleido_item.c
+++ b/soh/src/overlays/misc/ovl_kaleido_scope/z_kaleido_item.c
@@ -470,7 +470,7 @@ void KaleidoScope_DrawItemSelect(GlobalContext* globalCtx) {
             int itemId = gSaveContext.inventory.items[i];
             bool not_acquired = (gItemAgeReqs[itemId] != 9) && (gItemAgeReqs[itemId] != gSaveContext.linkAge);
             if (not_acquired) {
-                gsDPSetGrayscaleColor(POLY_KAL_DISP++, 109, 109, 109, 0);
+                gsDPSetGrayscaleColor(POLY_KAL_DISP++, 109, 109, 109, 255);
                 gsSPGrayscale(POLY_KAL_DISP++, true);
             }
             KaleidoScope_DrawQuadTextureRGBA32(globalCtx->state.gfxCtx, gItemIcons[itemId], 32,