I have a fun project that will involve chromakeying a live actor into a cartoon or animation. I would prefer, if possible to apply some sort of filter to make the live actor not stand out so much from the animation. I would prefer not to have to take the chromakeyed footage into something like aftereffects and frame by frame colorized or rotoscope him to look more cartoonlike.
Is there a method by where I could just use a filter or a series of filters in Vegas to acheive this. Is there a third party plug in or another piece of software that can achieve this without the painstaking task of rotoscoping. I would prefer if I could just apply it to the chromkeyed clip

It does not have to be perfect

Any suggestions