Transparent filtering

        I noticed that once you make a texture, there is no easy way to easily make every pixel transparent to a certain degree that you want. If you filter a texture that you want to make transparent to a color that is to a degree transparent, it does not work at all and the color just stacks on top of itself. It would be convenient for me if there were an easy way to make every pixel in a texture transparent at once, without having to redesign the whole texture.