Hi Jacey Boy,
just to make sure that we're both talking about the same parcel shelf:
basically there are 2 different layouts: with and w/o the locking knob.
Sorry, but no info about change of colors ... all the ones I've seen so far are of a darker grey ... the above dark/light nuances are caused by photoflash, I assume.
=>
http://www.seatforum.de/forum/showthread.php?t=8401&page=2
The partnos (picture documented in the linked thread) are:
with knob (MY2006, but not mandatory)
top shelf: ..................... 5P0 867 769 E 6E8 .... ~ 100 Euros
acc.shelf underneath: ... 5P0 867 134 C ......... ~ 50 Euros
w/o knob (MY2007, but not mandatory)
top shelf: ..................... 5P0 867 769 G 6E8
acc.shelf underneath: ... 5P0 867 134 F
Don't know if any of your
dealers over in UK will be smart enough to order the correct replacement parts ... but be soothed, the SEAT-garages over here in Germany can be of a nuisance just the same.
Hope that helps in a way ...
greets ... Klaus