make the green children remove their own paint.
sorry i couldn't resist.
it would probably be easier to prime and repaint.

you should not remove childrens pants, no matter what colour they are. you are sick and i am reporting you

maybe rent a carpet cleaner from the super market - they have strong cleaners which should be ok on your fabrics.

I thinks it's called The Rug Doctor - usually found by the Customer Service desk.

Childrens paint should have come off with water. Sounds like you've tried everything. You'll have to re-cover your chairs, and if they're your kids, re-cover the chairs in black ;-)

You need to specify what type of paint it is because how a stain is removed in diff rent ways. With acrylic it is very hard to remove but I would suggest using a sort of leave on detergent so that the stain is soaked. If it is poster paint try scrubbing the stain with stain remover or soapy water.

Ahh, this brings back dark memories of my daughter's pottery class and her brand new winter coat...

If the paints involved were NON FIRING paints (not glazes), and had a plastic texture (non watercolor) it was probably acrylic, which is also used on fabric for PERMANENT WASHABLE art. If the acrylic paint was diluted while still wet, it appears opaque like watercolor, but the permanence is still the same. Unless the spot is removed before it "cures" with an aggressive upholstery machine, I am afraid that your cream chairs will a have a new design. Once acrylic dries on fabric, it is there forever.

Recovering may be the only option. Sorry.