How to set background color of each cell of each column of a selected row in DataGridView WinForms?

Question

What I have tried, The below line of code changes a complete column background color.

dataGridView.Columns[1].DefaultCellStyle.BackColor = Color.Yellow;

But, I want to work the same for only a selected row. For example, I have 4 columns in datagridview, and when I select the row. Selected rows should have a different background color for every column.

This is how am getting a selected row.

foreach (DataGridViewRow dvr in dataGridView.SelectedRows)
                {
                   dvr.Cells[0].Value.ToString();
                  
                }

I am able to get the cell value of the selected row but I can't access the cell value back color property.

Any idea how I can do this. Please help