In our previous example on How to add Wireframe icons we built the below mockup
Once you have set the colors and line settings and if you decide to change the icon character you can easily do it using a single right click.
We make sure that the icon is selected and then go to the icon library on the left panel, and just right click on the icon
And now the icon is instantly changed
So you can do that, just like that, keep changing the icons