A median filter (https://en.wikipedia.org/wiki/Median_filter) paint mode could be nice for cleaning up noisy areas such as rough shading without worrying about introducing any new and unwanted colours as with soften.
A median filter (https://en.wikipedia.org/wiki/Median_filter) paint mode could be nice for cleaning up noisy areas such as rough shading without worrying about introducing any new and unwanted colours as with soften.