Light grey

I would go with something in the light brown family.

a little advice on matching brick color to pavers: http://www.revolutionarygardens.com/what-concrete-paver-goes-with-my-brick-house/

So I'm not familiar w/ cambelstone so I googled it and the results seem to be in french or dutch. Are you in Europe? It's a cool looking product, should be a great project!

I like the 'grijs zwart genuanceerde' option.

Taupe/beige/light brown.

Tan color. Maybe similar color for trim and shutters too.

The top left option, for SURE.

As promised this is the back of the house... so a big driveway... still trying to picture it as being part driveway, and the part in front of the glass, a nice patio... but not wooden

WHY are you replacing that beautiful cobblestone? From the first pic it looked like a small section but the back... Gorgeous!! Please don't!

Hi Jennlettswatson :). thank you for your comment. The cobblestone needs replacing as it is not beautiful in real life, and here in Belgium it is quite outdated! And more importantly, the driveway is not stabalised at all :(...

Hi Richie,
I think i'd pull out the tone from the roof or the brick, it's set off all that greenery wonderfully (not too red though).
Better; i'd try get the advice of Jay Sifford who's a landscape designer and houzz contributor. He is extremely sensitive to architecture too, and coordination of textures and colors; in my view, one of the best :
http://www.houzz.com/ideabooks/users/siffordgd