Text Border in Firefly

Adobe Firelfly's text effects are pretty nifty, but they all seem to keep the hard border of the text. I tried to do a smoky text with loose borders, for instance, but there was still a hard black line where the text ended. It was like the text was written in black with smoke superimposed over it (which is actually probably all it is), occasionally extending beyond the borders. I would like for that hard border to be completely absent and only have the edge of the text defined by the effect itself, if that makes sense, making the text look like it was made of smoke rather than text with smoke in it.