diff --git a/Tongue extraction_cropresizemethod/Tongue extraction/Form1.cs b/Tongue extraction_cropresizemethod/Tongue extraction/Form1.cs
index f0ea478..5c5b17d 100644
--- a/Tongue extraction_cropresizemethod/Tongue extraction/Form1.cs
+++ b/Tongue extraction_cropresizemethod/Tongue extraction/Form1.cs
@@ -871,13 +871,19 @@
                                 }
                                 else
                                 {
-                                    
                                     if (pix.Item1 > thresh)
                                     {
                                         glossCount++;
-                                        pix[0] = (byte)(255);
-                                        pix[1] = (byte)(0);
-                                        pix[2] = (byte)(0);
+                                        pix[0] = (byte)(0);
+                                        pix[1] = (byte)(255);
+                                        pix[2] = (byte)(255);
+                                        mat_gloss.Set<Vec3b>(i, j, pix);
+                                    }
+                                    else
+                                    {
+                                        pix[0] = (byte)((pix[0] + pix[1] + pix[2]) / 3);
+                                        pix[1] = (byte)pix[0];
+                                        pix[2] = (byte)pix[0];
                                         mat_gloss.Set<Vec3b>(i, j, pix);
                                     }
                                 }
@@ -922,7 +928,7 @@
                                 + bgr[2].ToString() + "," + bgr[1].ToString() + "," + bgr[0].ToString()
                                 );
                     }
-
+                    GC.Collect(); 
                 }
                 MessageBox.Show("Finished!");