There's not much to be said of most of the free static themes on the PlayStation Store, but the Journey one is something else.
The static Journey theme may not have the moving background the dynamic one does, but it's pretty close. Despite being totally free, the static one retains the music, sound effects, and custom icons of the paid dynamic theme.
This is definitely one of the more relaxing free themes up for grabs, and certainly one of the more attractive. It's worth a trip to the PlayStation Store if you want a more chill theme.