That is not an option when configuring a new Focus, so it appears to be a custom decal by the dealer. If it's not your thing, I'd immediately request it to be removed and to make sure the area is polished.
I bought off the lot. The stripes were not on the sticker list of installed options. I am okay with them. Color choices were good. I still don't understand why a fully option Tiitanium was at a dealer and survived all day. I had been to three dealers that day and no Tiitanium in stock. I found doing an inventory search. I was not going to let pen stripes kill the deal.