Do you want to transfer the highpolys vertex colour or has the highpoly own textures? If it has vertex cols, go to the highpoly tab and scroll to the right and check UNcheck the "ignore HPs vertex cols" and choose the right option in the baking tab (vertex cols). If the HP has textures, ignore the vertex cols in the…
You can get the vertex color baked from xNormal, so if you poly paint you can get that color from your high poly baked to a texture of your low poly. Is that what you mean? If it is it's the checckbox 'Bake highpoly vertex color'.
Oh! I didn't know that it used vertex colours. I was just setting up default materials with different colours, and assigning them to each part. I'll give the vertex colour method a go! Thanks guys!! I'm just for the first time today trying out xNormal. Its way faster!!