A red filter will really lighten up any red tones like lips, lipstick, etc., so you have to be careful. It can give some odd tones to people. On the other hand, it will reduce (lighten) ruddy complexions and helps a lot in that regard. A green filter is often used on people as well, but if I remember right, it will enhance ruddy skin, so there again, it will depend on the subject(s).
Personally, I would shoot without a filter assuming good light, and if you can, scan the negatives and adjust curves if needed in PP.
