That grill on the first picture looks like the standard
Cupra grill, which has the surround in glossy black - that sorts the top part.
For the rest, I assume that it is just a red wrap.
...or do you mean replacing your whole grill with the
Cupra one?
If that is the case, someone else has to comment... At least on the Skoda Octavia, the grill and bumper are welded as one single piece, dunno if it is different for the Seat Leon.