Whats the big metal thing on the back bumper , looks like a tow bar but only looks connected to the bumper.
I would refurbish the alloys white black or anthracite would look great, tint the windows not too dark though. Then lower it by 50mm .
The trick with fiat's seems to be quite subtle with the modifications.
EDIT: Maybe a badgless grille and some abarth side skirts.