// Doesn\'t work
cell.selectionStyle = .Blue
//Works when the selection is not multiple, if it\'s multiple with each selection the previous one disappear...
let cell
UITableViewCell has an attribute multipleSelectionBackgroundView.
https://developer.apple.com/documentation/uikit/uitableviewcell/1623226-selectedbackgroundview
Just create an UIView define the .backgroundColor of your choice and assign it to your cells .multipleSelectionBackgroundView attribute.