I wouldnt have matt black cos of the gloss mirrors and debating between dark grey and black
 
I wouldnt have matt black wheels cos of the gloss black mirror covers, debating between dark grey and black.
 
Matte black wheels would look nice, but I do like the darker grey.

Just don't do matte black mirrors, keep seeing these on the newer ibizas and they look pretty rubbish.
 
All bits not body colour = MATTE BLACK.

I've done gloss black mate and it looks awful, so happier all my plastics are matte now... Wheels are next as I'm bored of them silver haha.

Car will look mint whatever you decide though.