Users change theme

Is there a plugin or a simple way that will allow users to set their own theme for my website? I have a theme at the moment for the website but I know that some people will want it to be different as they may not want a dark theme which the theme I have got it. I want the ability for users to select their own theme. Is that possible or is there a plugin for this already? I know theme changer plugin isn't updated so just wondering if there is any updated ones that work with 5.1. Thanks in advance