would one be able to apply it to some screen material thats already mounted (Dazian matte white). How much would it take to cover a 96"diag 16x9 screen. How easy and forgiving is it, and who has here has had sucess w/it. What do white's look like on a grey screen? If I went and got a sample of grey paint from a hardware store would this give me a general idea of what the goo screen would look like...What makes goo different than grey paint? Thanks.