Change button color depends on the data from the database

Public Sub ExecuteColoring()
        Try
            Dim numberRows As Integer
            numberRows = DataGridView1.Rows.Count - 2
            'We subtract 2 because first of all it gives one extra and also we have to take care that the count here starts with 0 and not 1

            Do Until numberRows = -1
                Dim btnCurrent As Button

                btnCurrent = Me.Controls.Item("Button" + (numberRows + 1).ToString)

                'Add one to the button number because our button number starts from 1 and not 0
                If DataGridView1.Rows(numberRows).Cells(1).Value.ToString.ToLower = "false" Then
                    'If it is false then the shop is not rented... So the color will be green
                    btnCurrent.BackColor = Color.Green
                Else                     'If it is true then the shop is rented and the color will be red
                    btnCurrent.BackColor = Color.Red
                End If
                numberRows -= 1
            Loop
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
    End Sub