I'm having my lawn returfed, the turf were laying on my pattio for a few days, the chap who is doing the job for me laid one half of the lawn which doesn't look too bad and then dug out the rest of the garden, laid new top soil and finally laid the rest today and it's yellow. I questioned it (but frankly I haven't got a clue other than it should be green surely🤔) he keeps saying give it a week and it will all be green, is he right???