https://diyprojectsforhome.com/how-to-restore-color-to-pavers/

In the video, older pavers will be dyed and the newer ones will have an opaque protection layer applied. These two steps will allow both pavers to mix beautifully and make them appear fresh.

This video compares side-byside between an old paver as well as one that has been sealed with sealer. deg7nwsgwb.