I am not sure I quite follow that.
If you are asking if you do a new install and select xfce will you get the same theme as on the ISO, then “yes”. The theme will be the same as long as you don’t manually deselect the settings package during the install.
If you are asking if you pick a different DE during installation and them manually install xfce then “No” you won’t get the theme unless you do some extra work.