How to get the color of the clicked cell?

I had this question after viewing TAdvStringGrid:  Cell's Background and Font color handling.

In a TAdvStringGrid, in grid.OnGetCellColor event-handler, I've set each cell of the fixed column to a different color:

ABrush.Color := GetMyCustomColor;

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Now, when I click on a cell of this fixed column, in the grid.OnClickCell event-handler, I want to get the color of the clicked cell.

How can I do this?

I have tried:

grid.GetCellProperties(ACol, ARow).BrushColor)

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But it does not work. I always get the same color: RGB(255, 255, 255).