[Michal Rockman-pollard]

I have an image i drew, then scanned to photoshop and added 3 colours to it, water colour style. now its 3 colours+black = 4 colours)
i want to be able to give it to somebody as an AI file and that it will be possible for them to change the colours to different ones (they use coraldraw).
i usually do this on photoshop as layers, but they cannot use photoshop…
how do i vectorize it without loosing the quality of the hand-drawnness of it and the colours?
Here you can see the image to get an idea –
https://i56.photobucket.com/albums/g169/yachichi/girlStripes_WT-SJ12011054.jpg
I will be thankful with any help, i’m stuck!!
thanks,
michal