Hi Sergey,
To Turnoff the AlphaBlendColor by using the AllowSelection property of the grid. Below is the code that show this task.
this.gridControl1.AllowSelection = this.gridControl1.AllowSelection ^ GridSelectionFlags.AlphaBlend;
You can draw over existing selected cells in the CellDrawn using the your new color. This should give you the same effect as selections. Check out this forum thread that uses this idea to color the current cell consistently with the other selections.
http://www.syncfusion.com/Support/Forums/message.aspx?MessageID=12812Best regards,
Johnson