2004 Honda Jazz Rear Headrests (PL4 Greenbank)

Hello I've been looking without success to find a pair of headrests for my sister's Honda Jazz it's a 2004 model but I believe headrests would be compatible from any 2002-2008 model of the car.

I appreciate it's unlikely I would be able to get this for free since they're not a common item but if anyone has any suggestions on where we might be able find some I would be eternally grateful.

I been looking for what feels like a year at this point.

I know beggars can't be choosers but if given the choice we'd like a grey one so they match the colors of the rest of the seats. I could only find a photo of a blue pair.

I live in Plymouth, Devon and am somewhat limited on how far I can travel really no more than say 15 miles.

Thanks.