From b9997e7ee2f68a7016cd20d2bb8d29a75d5ca8bf Mon Sep 17 00:00:00 2001
From: QIDI TECH <893239786@qq.com>
Date: Wed, 10 Apr 2024 17:50:02 +0800
Subject: [PATCH] Update GLCanvas3D.cpp

---
 src/slic3r/GUI/GLCanvas3D.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index 9bf0583..70af77f 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -4952,8 +4952,10 @@ void GLCanvas3D::_render_thumbnail_internal(ThumbnailData& thumbnail_data, const
         else {
             shader->set_uniform("emission_factor", 0.0f);
 //Y18
-            vol->model.set_color((vol->printable && !vol->is_outside) ? ColorRGBA { 0.2f, 0.6f, 1.0f, 1.0f } : ColorRGBA::GRAY());
-            //vol->model.set_color((vol->printable && !vol->is_outside) ? vol->color : ColorRGBA::GRAY());
+            if (extruders_count > 1)
+                vol->model.set_color((vol->printable && !vol->is_outside) ? vol->color : ColorRGBA::GRAY());
+            else
+                vol->model.set_color((vol->printable && !vol->is_outside) ? ColorRGBA { 0.2f, 0.6f, 1.0f, 1.0f } : ColorRGBA::GRAY());
         }
         // the volume may have been deactivated by an active gizmo
         const bool is_active = vol->is_active;