timmmay:
mattwnz:
Sorry to say but that looks like it has lost almost all it's colour. So to reintroduce colour would need tinting. It is pretty much a B/W at the moment. SOmeone maybe able to pull some colour out of it, but it is mainly green at the moment.
Sorry to say, but I agree. Someone would have to recolor it by hand, or maybe there's specialist software.
I think a another photo of the wedding, that hasn't faded, that has the correct colours may help to get the colours and saturation correct.