I need a texture that, when triggered via an I/O input, has its alpha fade from 1 to 0 (opaque to invisible) over 10 seconds. doesn't matter what the texture is as long as it works on a brush. Brush can be world or entity, it doesn't matter. Please post a VMF or detail how you got this to work in your post. I'll also try to make a VALVe development wiki article on this sort of thing for TF2 if it works and give you credit for it.