Water marks on seats ?

[J4CKO]

We have an 07 Galaxy Ghia and it has the posher of the cloth trims available on the car, it seems woefully ill equipped to cope with kids, where they have spilt stuff there are water marks, any suggestions as to how to renew the cloth to an even colour, was going to get a VAX and give it a go but dont want to if it makes it worse. They are black seats with white marks on.

[J4CKO]

Not sure why a debate about the slightly grotty looking seats in an aging Ford people carier would warrant Popcorn !