Keep in mind that scratch test is not a good indicator of if your tree will live. All the trees I have ever gotten were green. The problem is the wood underneath is already starting to fade and die. So even if it's green, it'll eventually die. And even if it's green and alive, if the roots don't grow and rebound from the shock, the plant can't survive. best you can do is just give your best care and wait. Within a month, you'll know if you are successful or not.