Whenever I use Boris Continuum (or it may be any keying plugin) in FCP, if my subject is wearing black, the black will flicker after rendering. I've solved the problem a little by bringing down my blacks in the 'color corrector three way' filter..but then my subject becomes too dark, so this isn't really a fix-all solution.
I've tried fooling with the 'flicker' option in the BCC key plugin, but to no avail. Is this due to another setting, like "lightness" or "density" or something like that? Any advice is appreciate.