I was playing with a preset today (black line only II) under simplify. Great look for a line drawing!! something weird happened and I can not seem to figure out why.
Under the edges adjustment I switched the monochrome edges from dark to light and my image came up in a colour with some white edges. I then switched back to dark and my image stayed in colour with some dark edges.
This is not a huge issue as I just clicked on the preset again and all was fine. I do find it curious that this happened though. Any suggestions as to why?