Ours is a 2010 Dynamic Eco so maybe not the same. Seats and door inserts have "yucky yellow sick" coloured panels. Mrs Jock hates them so I got a set of Aldi covers. The headrests need to come out for fitting but I couldn't figure out how to remove the headrests either. Popped down to my local independent Fiat chap to be told - "they don't come out unless you get right inside the seat, don't bother son!" (as I'm 71 being called "son" quite went to my head!) Mrs Jock got out her sewing kit and altered the covers to fit.
Rear seat was easy as there are no headrests and no holes to take them that I can see - which quite surprised me when we bought her, but that's the way they're made I was told? Covers just slipped on no bother!