Total Media Theatre 5 - colour issues

Does anyone else have colour problems with TMT5 ? Whenever I play a Blu-ray I often find the skin tones especially are 'off', usually a bit too pink and perhaps with an orange hue. The colour settings in TMT5 seems pretty basic so it doesn't seem possible to tweak them enough.

For those discs that I can play with VLC the colours are perfect.

My video card is a Sapphire HD 7850.