Hi mate - become a bit of a seat expert sadly after all the seat problems with my 200 (and the 2 previous rallyes!)
Do you want to replace the covers with standard renault ones or get them re-upholstered??
I know an amazing car uphosters - been doing it for years on the most exotic and classic cars...
If you want to replace with Renault covers it's a bit of a pain in the arse job but can be done...
Loads of clips (if you see my albi blue thread you will see), and just a pain to dismantle the seat and get it all back fitting right (the back cover and seat base)