diff --git a/dotnet/src/dotnetframework/GxExcel/GxExcelEPPlus.cs b/dotnet/src/dotnetframework/GxExcel/GxExcelEPPlus.cs
index 64a53a3dc..fb0c151df 100644
--- a/dotnet/src/dotnetframework/GxExcel/GxExcelEPPlus.cs
+++ b/dotnet/src/dotnetframework/GxExcel/GxExcelEPPlus.cs
@@ -824,16 +824,12 @@ public int BackColor
 
                 for (int i = 1; i <= cntCells; i++)
                 {
-                    int val = (int)value;
-                    int red = val >> 16 & 0xff;
-                    int green = val >> 8 & 0xff;
-                    int blue = val & 0xff;
-
-                    System.Drawing.Color color = System.Drawing.Color.FromArgb(red, green, blue);
-
-                    pCells[i].Style.Fill.BackgroundColor.SetColor(color);
-                }
-                
+					if (pCells[i].Style.Fill.PatternType == ExcelFillStyle.None)
+					{
+						pCells[i].Style.Fill.PatternType = ExcelFillStyle.Solid;
+					}
+					pCells[i].Style.Fill.BackgroundColor.SetColor(GXExcelHelper.ResolveColor(value));
+                }                
             }
         }