I'm not sure if they are blues, but we had our back garden done by "Great Grass" in Failsworth. They have a show room you can go in and take samples.
They took our the old garden, removed the shed and some plants we didn't like and levelled it all off. They fitted an "Indian Stone" patio, new grids, new lawn and borders and did a great job. We love the garden now. It been superb for us as we have a young lad so there's no mud when he plays in the garden. The artificial grass dries very quickly and it makes your house feel bigger as you can go and play outside and not have mud trampled through the house.
The only thing you have to do is brush the leaves off and give it a vac once every few months but it's been great so far. Looks like new and we've had it for about 4/5 years now.